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Grassy Flats Resort & Beach Club

4.0 star property

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Photo gallery for Grassy Flats Resort & Beach Club

A wooden deck with a pool and chairs overlooking a beach with palm trees.
Property video
A pool area with palm trees and a view of the ocean.
Sun loungers, beach umbrellas, beach towels, windsurfing
A hotel room with a sofa, a desk, a chair, a TV, and a balcony with curtains.

Reviews

9.4 out of 10
Exceptional

Popular amenities

  • Pet friendly
  • Parking included
  • Free WiFi
The current price is $243
$216 nightly
$243 total
Total with taxes and fees
Aug 11 - Aug 12

Explore the area

View in a map
58182 Overseas Hwy, Marathon, FL, 33050
  • Place, Dolphin Research Center
    ‪19 min walk‬
  • Place, Curry Hammock State Park
    ‪1 min drive‬
  • Place, Crawl Key
    ‪2 min drive‬
  • Airport, Marathon, FL (MTH-Florida Keys Marathon)
    ‪10 min drive‬

Room options

View all photos for Family Suite, 2 Bedrooms

Hypo-allergenic bedding available, blackout drapes, iron/ironing board

Family Suite, 2 Bedrooms

8.0 out of 10
Very good
(6 reviews)
  • Ocean view
  • 2 bedrooms
  • Sleeps 4
  • 2 Queen Beds
  • Free WiFi

View all photos for Family Suite, 2 Bedrooms, Accessible

Hypo-allergenic bedding available, blackout drapes, iron/ironing board

Family Suite, 2 Bedrooms, Accessible

10.0 out of 10
Exceptional
(2 reviews)
  • Garden view
  • 2 bedrooms
  • Sleeps 4
  • 2 King Beds
  • Free WiFi

View all photos for Family Suite, 3 Bedrooms

Hypo-allergenic bedding available, blackout drapes, iron/ironing board

Family Suite, 3 Bedrooms

10.0 out of 10
Exceptional
(1 review)
  • Ocean view
  • 3 bedrooms
  • Sleeps 6
  • 1 King Bed and 2 Queen Beds
  • Free WiFi

View all photos for Standard Double Room, Ocean View - Adults Only

A hotel room with two beds, a desk, a chair, a ceiling fan, and a large window with curtains.

Standard Double Room, Ocean View - Adults Only

9.6 out of 10
Exceptional
(17 reviews)
  • Ocean view
  • 1 bedroom
  • Sleeps 2
  • 2 Queen Beds
  • Free WiFi

View all photos for Standard Room, Ocean View - Adults Only

A hotel room with a large bed, wooden headboard, two bedside tables with lamps, a desk with a chair, and a ceiling fan.

Standard Room, Ocean View - Adults Only

10.0 out of 10
Exceptional
(31 reviews)
  • Ocean view
  • 1 bedroom
  • Sleeps 2
  • 1 King Bed
  • Free WiFi

View all photos for Luxury Room, 1 King Bed, Ocean View - Adults Only

A four-poster bed with a ceiling fan, a dark brown leather sofa, and a small round table with two chairs.

Luxury Room, 1 King Bed, Ocean View - Adults Only

10.0 out of 10
Exceptional
(2 reviews)
  • Ocean view
  • 1 bedroom
  • Sleeps 2
  • 1 King Bed
  • Free WiFi

View all photos for Deluxe Room, 1 King Bed, Oceanfront - Adults Only

A hotel room with a large bed, wooden ceiling, a desk with a chair, a sofa, and a view of the outdoors.

Deluxe Room, 1 King Bed, Oceanfront - Adults Only

9.6 out of 10
Exceptional
(4 reviews)
  • Ocean view
  • 1 bedroom
  • Sleeps 2
  • 1 King Bed
  • Free WiFi

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About the neighborhood

Marathon

With a stay at Grassy Flats Resort & Beach Club in Marathon, you'll be by the ocean, just steps from Coco Plum Beach and a 2-minute drive from Curry Hammock State Park. .This hotel is 10 mi (16 km) from The Turtle Hospital.

What's nearby

  • Dolphin Research Center - 19 min walk - 1.1 miles
  • Curry Hammock State Park - 1 min drive - 1.1 miles
  • Keys Cable Park - 1 min drive - 1.5 miles
  • Crawl Key - 2 min drive - 1.5 miles
  • Coco Plum Beach - 10 min drive - 7.0 miles

Getting around

  • Marathon, FL (MTH-Florida Keys Marathon) - 9 min drive

Restaurants

  • ‪Circle K - ‬7 min drive
  • ‪The Island Fish Company - ‬6 min drive
  • ‪Angler & Ale - ‬4 min drive
  • ‪Sparky's Landing Fish and Cocktails - ‬6 min drive
  • ‪Circle K - ‬6 min drive

About this property

Grassy Flats Resort & Beach Club

Grassy Flats Resort & Beach Club offers 38 accommodations, which are accessible via exterior corridors and feature hair dryers and irons/ironing boards. Rooms open to furnished balconies or patios. 43-inch flat-screen televisions come with premium cable channels.

Guests can surf the web using the complimentary wireless Internet access. Additionally, rooms include complimentary toiletries and blackout drapes/curtains. Hypo-allergenic bedding, change of towels, and change of bedsheets can be requested. Housekeeping is provided daily.

2 outdoor swimming pools are on site along with a hot tub. Other recreational amenities include a sauna.

The recreational activities listed below are available either on site or nearby; fees may apply.

Stay in one of 38 guestrooms featuring flat-screen televisions. Rooms have private furnished balconies or patios. Complimentary wireless internet access keeps you connected, and cable programming is available for your entertainment. Bathrooms have complimentary toiletries and hair dryers.
Dip into one of the 2 outdoor pools or enjoy other recreational amenities including a sauna and bicycles to rent. Additional amenities at this hotel include complimentary wireless internet access, concierge services, and charcoal grills.
Satisfy your appetite with local and international cuisine at The Rhum House, a steakhouse which features a bar/lounge and an ocean view. Wrap up your day with a drink at the poolside bar. Cooked-to-order breakfasts are available daily from 6:00 AM to 11:00 AM for a fee.
Featured amenities include multilingual staff, ATM/banking services, and an elevator. Free self parking is available onsite.
Cooked-to-order breakfasts are available for a surcharge and are served each morning between 6:00 AM and 11:00 AM.
The Rhum House - Overlooking the ocean, this steakhouse specializes in local and international cuisine and serves dinner only. Guests can enjoy drinks at the bar. A children's menu is available. Reservations are required. Open select days.
The Palm Deck - Overlooking the ocean, this rooftop bar specializes in local cuisine and serves dinner and light fare. Happy hour is offered. Open select days.
Grassy Key Market - This coffee shop specializes in American cuisine and serves breakfast, lunch, dinner, and light fare. Guests can enjoy drinks at the bar. A children's menu is available. Open daily.

Property amenities

Internet

  • Available in all rooms: Free WiFi
  • Available in some public areas: Free WiFi

Parking and transportation

  • Electric car charging station on site
  • Free self parking on site
  • Wheelchair-accessible parking and van parking available

Food and drink

  • Daily cooked-to-order breakfast available 6:00 AM to 11:00 AM for a fee: USD 5 to 30 per person
  • A bar/lounge
  • A poolside bar
  • A restaurant

Restaurants on site

  • Grassy Key Market
  • The Palm Deck
  • The Rhum House

Things to do

  • 2 outdoor pools
  • Bicycle rentals
  • Bicycle storage
  • Books
  • Canoeing
  • Fishing
  • Hot tub
  • Kayaking
  • Paddleboard
  • Sailing
  • Sauna
  • Water sports equipment
  • Windsurfing

Family friendly

  • 2 outdoor pools
  • Children's games
  • Pool gate

Conveniences

  • ATM
  • Limited-hour front desk
  • Water dispenser

Guest services

  • Change of bedsheets (on request)
  • Change of towels on request
  • Concierge services
  • Housekeeping (daily)
  • Multilingual staff
  • Proposal/romance packages

Outdoors

  • Barbecue grill
  • Beach loungers
  • Beach towels
  • Beach umbrellas
  • Dock
  • Firepit
  • Outdoor furniture
  • Pool loungers
  • Pool umbrellas

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • 2 accessible parking spaces
  • Elevator (36 inch wide door)
  • Pool hoist on site
  • Stair-free path to entrance
  • Visual alarms in hallways
  • Well-lit path to entrance
  • Wheelchair accessible (may have limitations)
  • Wheelchair-accessible parking
  • Wheelchair-accessible path of travel
  • Wheelchair-accessible path to elevator
  • Wheelchair-accessible pool
  • Wheelchair-accessible public washroom
  • Wheelchair-accessible restaurant
  • Wheelchair-accessible van parking

More

  • 3 buildings
  • 3 floors
  • At least 80% organic food
  • Comprehensive food waste policy
  • Eco-friendly cleaning products used
  • Local artist showcase
  • Locally sourced food prioritized
  • No plastic coffee stirrers
  • No plastic drinking straws
  • No plastic soft drink bottles
  • No plastic water bottles
  • Non-plastic coffee stirrers available
  • Non-plastic drinking straws available
  • Renovated entire property - March 2022
  • Reusable cups
  • Reusable tableware
  • Smoking not allowed
  • Some LED lighting used
  • Vegan dining options
  • Vegetarian breakfast available
  • Vegetarian dining options
  • Water dispenser usage encouraged

Room amenities

Bedroom

  • Bedsheets provided
  • Blackout drapes
  • Hypo-allergenic bedding

Bathroom

  • Free toiletries
  • Hair dryer
  • Shampoo
  • Soap
  • Toilet paper
  • Towels provided

Entertainment

  • 43-inch flat-screen TV with premium cable channels

More

  • Access via exterior corridors
  • Air conditioning (climate-controlled)
  • Bulk dispensers for toiletries
  • Cleaning products are eco-friendly
  • Eco-friendly toiletries
  • Electrical adapters
  • Iron/ironing board
  • LED lighting
  • Recycling
  • Water-efficient showers
  • Water-efficient toilets

Policies

Check-in

Check-in start time: 4:00 PM; Check-in end time: 9:00 PM
Late check-in subject to availability
Minimum check-in age: 21

Check-out

Check-out before 11:00 AM
Late check-out subject to availability
A late check-out fee will be charged

Special check-in instructions

The front desk is open daily from 8:00 AM - 8:00 PM
Guests will receive an email within 24 hours before arrival with check-in instructions; front desk staffed during limited hours
If you are planning to arrive after 9:00 PM please contact the property in advance using the information on the booking confirmation
Information provided by the property may be translated using automated translation tools

Renovations and closures

The following facilities will be closed during the summer:
  • Bar/Lounge

Access methods

Front desk (limited hours)

Pets

Pets allowed for an extra charge of USD 50 per accommodation, per night
Service animals are welcome, and are exempt from fees
Welcoming dogs only
Up to 30 lbs per pet
Pets cannot be left unattended
Specific rooms only; pet-friendly rooms can be requested by contacting the property at the number on the booking confirmation

Children and extra beds

Children are welcome
Rollaway/extra beds are not available
Cribs (infant beds) are not available

Property payment types

Important information

Fees

You'll be asked to pay the following charges at the property. Fees may include applicable taxes:

  • Resort fee: USD 48 per accommodation, per night
The resort fee includes:
  • Additional inclusions
  • Beach access
  • Beach loungers
  • Beach towels
  • Bicycle storage
  • Housekeeping
  • In-room bottled water
  • In-room coffee
  • Lending library access
  • Pool access
  • Spa access
  • Hot tub access

We have included all charges provided to us by the property.

Optional extras

  • Fee for cooked-to-order breakfast: approximately USD 5 to 30 per person
  • Pet fee: USD 50 per accommodation, per night
  • Service animals are exempt from fees
  • Late check-out is available for a fee (subject to availability)

The above list may not be comprehensive. Fees and deposits may not include tax and are subject to change.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card, or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
The name on the credit card used at check-in to pay for incidentals must be the primary name on the guestroom reservation
Guests must contact this property in advance to reserve cribs/infant beds
This property accepts credit cards, debit cards, and cash
Cashless transactions are available
Safety features at this property include a carbon monoxide detector, a fire extinguisher, a smoke detector, and a first aid kit
This property has outdoor spaces, such as balconies, patios, terraces which may not be suitable for children; if you have concerns, we recommend contacting the property prior to your arrival to confirm they can accommodate you in a suitable room

We should mention

Pool access available from 7:00 AM to 10:00 PM
Only registered guests are allowed in the guestrooms
Some facilities may have restricted access; guests can contact the property for details using the contact information on the booking confirmation
This property welcomes guests of all sexual orientations and gender identities (LGBTQ+ friendly)

Property is also known as

Grassy Flats & Club Marathon
Grassy Flats Resort & Beach Club Marathon
Grassy Flats Resort & Beach Club Hotel Marathon
Grassy Flats Resort & Beach Club Hotel
Grassy Flats & Club Marathon
Grassy Flats Resort & Beach Club Hotel
Grassy Flats Resort & Beach Club Marathon
Grassy Flats Resort & Beach Club Hotel Marathon

Grassy Flats Resort & Beach Club Reviews

Reviews

9.4

Exceptional

Rating 10 - Excellent. 374 out of 477 reviews
Rating 8 - Good. 64 out of 477 reviews
Rating 6 - Okay. 28 out of 477 reviews
Rating 4 - Poor. 6 out of 477 reviews
Rating 2 - Terrible. 5 out of 477 reviews

9.6/10

Cleanliness

9.6/10

Staff & service

9.0/10

Amenities

9.2/10

Property conditions & facilities

Reviews

Verified

10/10 Excellent

kevin

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Amazing views, hospitality and food!
Stayed 5 nights in Mar 2026
Verified

10/10 Excellent

Susan Marie

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
We loved our stay at Grassy Flats. From the beautiful room and view to the great food and live music at the bar, what a place! Great staff, great location, great time!
Stayed 7 nights in Apr 2026
Verified

10/10 Excellent

Gerald

Liked: Cleanliness, staff & service, property conditions & facilities
All amenities were great!
Stayed 4 nights in Apr 2026
Verified

10/10 Excellent

Lance

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
It was such a lovely place. Great pools, fun tiki bar during the day and great rooftop happy hour in the evening. The restaurant on site is delicious. There’s a market on site that had so many great wines, snacks, deli & breakfast too.
Stayed 2 nights in Apr 2026
Verified

10/10 Excellent

Christine

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Nice pol and hot tub. The restaurant up front serves breakfast and fresh baked items along with lunch options. Their food and coffee was excellent!
Stayed 3 nights in Apr 2026
Verified

8/10 Good

Carisa

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great rooftop bar with happy hour, live music and excellent food. Enjoyed the small but very pretty property.
Ocean view double room.
Rooftop bar
Lobster tacos, very good.
Stayed 1 night in Apr 2026
Verified

8/10 Good

DEBORAH LEE

Liked: Cleanliness, staff & service, property conditions & facilities
Disliked: Amenities
Yes the view was nice, the hotel staff was nice and the room was clean
View from room
Nice balcony with two chairs and table
Can’t see ocean from laying in bed
Cute bathroom
Stayed 2 nights in Mar 2026
Verified

10/10 Excellent

Jeffery Scott

Liked: Cleanliness, amenities, property conditions & facilities
Great place!
Stayed 5 nights in Jan 2026
Verified

10/10 Excellent

KAREN

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Every single part of our stay at Grassy Flats was 5/5! Staff, room, ocean view, pool, dining, market, beach, etc. highly recommend!
Stayed 2 nights in Mar 2026
Verified

10/10 Excellent

Kristine

Liked: Cleanliness
Friendly staff, great view from room, pool fine, many areas to lounge, “ store” nice and handy and fair priced.
Stayed 2 nights in Feb 2026
Verified

10/10 Excellent

SUSAN

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful property
Stayed 2 nights in Mar 2026
Verified

10/10 Excellent

Jeff

Liked: Cleanliness, staff & service, amenities
Great pool area, clean, fantastic views
Stayed 4 nights in Feb 2026
Verified

10/10 Excellent

Daniel

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Was a very clean resort. Make sure you make a reservation if you would like to eat at the rhum house. On property market is a gem. Live music on the palm deck was great.
Stayed 6 nights in Apr 2026
Verified

10/10 Excellent

Serge

Liked: Cleanliness, amenities, property conditions & facilities
Very clean and spacious room with great ocean view. Also, very courteous staff
Stayed 2 nights in Feb 2026
Verified

10/10 Excellent

Sarah C.

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Grassy Flats is an amazingly beautiful property. From one end to the other it's like a little slice of paradise for sure. We stayed in the wreckers building. The room was fantastic, clean and very comfortable. The pool was warm and hot tub was delightful. Restraunts were closed when we were there so we ate at the market. Fish tacos were pretty basic. Overall an excellent stay.
Stayed 1 night in Mar 2026
Verified

10/10 Excellent

Steven

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful ocean view from our lovely room. Wonderful balcony and facilities.
Stayed 3 nights in Mar 2026
Verified

10/10 Excellent

Heidi

Liked: Cleanliness, staff & service, amenities
The view was spectacular from our room. The staff were so friendly (especially Wilma)! Great food, great vibe!
Stayed 3 nights in Feb 2026
Verified

10/10 Excellent

Victoria

Liked: Cleanliness
Beach view was nice Breakfast not available
Stayed 4 nights in Mar 2026
Verified

10/10 Excellent

Lance

Liked: Cleanliness, staff & service, amenities
Staff was very friendly and helpful. Nice room at a beautiful location. Really enjoyed the beach and pools.
Stayed 4 nights in Feb 2026
Verified

10/10 Excellent

Jeffrey

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Relaxed location on the keys, not too busy and plenty of restaurants nearby and on location to have a different experience each night. Resort had friendly and helpful staff with plenty of activities on site to take advantage of. 2 beautiful pool areas, beach area with various activities available including biking, kayaking, paddle boarding, floating cabana, sauna & tiki bar. Enjoyed our stay very much!
View from our room
View from our room
Roof top bar & restaurant on site
Pool view
Stayed 6 nights in Mar 2026
Verified

10/10 Excellent

Kevin

Liked: Cleanliness, staff & service, amenities
When we checked in we were upgraded to a fantastic room. The views at this resort are incredible. The staff was so friendly and welcoming and the onsite restaurant was the best.
Stayed 1 night in Feb 2026
Verified

10/10 Excellent

Dorothy

Liked: Cleanliness, amenities, property conditions & facilities
Amazing stay, perfect small hotel with lot of activities
Stayed 1 night in Oct 2025
Verified

10/10 Excellent

Janelle

Liked: Cleanliness, staff & service, amenities
Room was beautiful and property was stunning!
Stayed 4 nights in Dec 2025
Verified

10/10 Excellent

David

Liked: Cleanliness, property conditions & facilities
Great staff, check in, site tour and dinner in the restaurant.
Stayed 1 night in Nov 2025
Verified

10/10 Excellent

daniele

Liked: Cleanliness, amenities, property conditions & facilities
fantastic place with great restaurant and all the staff super! will be back next year Daniele
Stayed 5 nights in Dec 2025