Skip to main content
Beginning of main content
CheapTickets Verified Reviews

Get an overview of this hotel
Adults-only beach hotel

Popular property highlights

Breakfast included
Free WiFi
Multilingual staff
Concierge services

With a stay at The Mansion on the Sea - Southernmost House in the USA, you'll be centrally located in Key West, steps from Southernmost Point and Duval Street. This beach hotel is 0.1 mi (0.1 km) from South Beach and 0.1 mi (0.1 km) from Key West Butterfly and Nature Conservatory.

Make yourself at home in one of the 18 air-conditioned rooms featuring flat-screen televisions. Your pillowtop bed comes with premium bedding. Cable television is provided for your entertainment. Bathrooms feature showers, designer toiletries, and hair dryers.

Take advantage of recreation opportunities such as an outdoor pool or take in the view from a terrace and a garden. Additional amenities at this Victorian hotel include concierge services, gift shops/newsstands, and wedding services.

Grab a bite at Seaside Cafe at Mansion, a café which features a bar/lounge and an ocean view. You can also stay in and take advantage of the room service. Wrap up your day with a drink at the poolside bar. A complimentary continental breakfast is served daily from 8 AM to 10 AM.

Featured amenities include complimentary newspapers in the lobby, multilingual staff, and luggage storage. Self parking (subject to charges) is available onsite.

Languages Spoken

  • English

Show all languages

The Southernmost House Hotel - Adults Only

1400 Duval Street, Key West, FL 33040

Hotel Amenities

Hotel Amenities

Dining options at the hotel include a restaurant and a snack bar/deli. Guests can unwind with a drink at one of the hotel's bars, which include a poolside bar and a bar/lounge. A complimentary breakfast is offered each morning.

This Victorian hotel also offers an outdoor pool, a terrace, and tour/ticket assistance. Parking is available onsite for a surcharge.

The Mansion on the Sea - Southernmost House in the USA has designated areas for smoking.

  • Picnic area
  • Daily
  • Coffee/tea in common areas
  • Number of outdoor pools - 1
  • Number of bars/lounges - 1
  • Number of poolside bars - 1
  • Front desk (limited hours)
  • Free breakfast
  • Porter/bellhop
  • Tours/ticket assistance
  • Year Built - 1897
  • Beach sun loungers
  • Self parking (surcharge)
  • Pool sun loungers
  • Wheelchair accessible
  • Safe-deposit box at front desk
  • Terrace
  • Luggage storage
  • Wheelchair accessible – no
  • Free continental breakfast
  • Number of restaurants - 1
  • Concierge services
  • Gift shops or newsstand
  • Snack bar/deli
  • Shopping on site
  • Designated smoking areas
  • Pool umbrellas
  • Reception hall
  • Total number of rooms - 18
  • Television in common areas
  • Number of floors - 3
  • Number of buildings/towers - 3
  • Wedding services
  • Garden
  • Multilingual staff
  • Outdoor furniture
  • Free newspapers in lobby

Internet

Available in all rooms: Free WiFi

Available in some public areas: Free WiFi

Languages Spoken

  • English
  • French
  • Spanish
  • Russian

Parking

Self parking (surcharge)

Room Amenities

The Mansion on the Sea - Southernmost House in the USA offers 18 air-conditioned accommodations with complimentary newspapers and coffee/tea makers. Each accommodation is individually furnished. Pillowtop beds feature premium bedding. 42-inch flat-screen televisions come with premium cable channels. Bathrooms include showers, designer toiletries, complimentary toiletries, and hair dryers. Housekeeping is provided daily.

  • Air conditioning
  • Television
  • Free newspaper
  • Coffee/tea maker
  • Daily housekeeping
  • Free toiletries
  • Hair dryer
  • Iron/ironing board
  • Designer toiletries
  • Premium bedding
  • Room service
  • Premium TV channels
  • Shower only
  • Cable TV service
  • Flat-panel TV
  • HDTV
  • Individually furnished
  • Pillowtop mattress
  • TV size: 42
  • TV size measurement: inch
  • Towels provided
  • Bedsheets provided
  • Housekeeping on request
  • Local maps
  • Streaming services

Where to Eat

A complimentary continental breakfast is served each morning between 8 AM and 10 AM.

Seaside Cafe at Mansion - Overlooking the ocean, this café serves lunch and dinner. Guests can enjoy drinks at the bar.

Room service is available.

Nearby Things to Do

Recreational amenities at the hotel include an outdoor pool.

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

  • Water skiing nearby
  • Golfing nearby
  • Snorkeling nearby
  • Parasailing nearby
  • Skydiving nearby
  • Windsurfing nearby
  • Bicycle rentals nearby
  • Ecotours nearby
  • Boat tours nearby
  • Golf lessons available nearby
  • Kayaking nearby
  • Sailing nearby
  • Scuba diving nearby
  • Scooter/moped rentals nearby

Accessibility

If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.

  • Upper floors accessible by stairs only
  • Well-lit path to entrance

Hotel Policies

Check-in

Check-in time starts at 4 PM

Check-in time ends at 10 PM

Minimum check-in age is: 18

Check-out

Check-out time is 11 AM

Payment types

Children and extra beds

  • Children younger than 18 are not allowed at this adults-only property. All guests 18 and older are welcome.
  • Rollaway/extra beds are available for USD 75 per day.
  • Cribs (infant beds) are not available.

Pet Policy

  • Pets not allowed

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

Minimum Spring Break check-in age is 24 years old

This property accepts credit cards; cash is not accepted

Noise-free guestrooms cannot be guaranteed

Safety features at this property include a fire extinguisher

Charges for extra guests may apply and vary according to property policy.

A cash deposit, credit card, or debit card for incidental charges and government-issued photo identification may be required upon check-in.

Special requests are subject to availability at the time of check-in. Special requests can't be guaranteed and may incur additional charges.

This property is managed by a professional host. The provision of housing is linked to their trade, business, or profession. Minimum Spring Break check-in age is 24 years old. This property accepts Visa, Mastercard, American Express, and Discover. Cash is not accepted. Noise-free guestrooms cannot be guaranteed. For guests' safety, the property includes a carbon monoxide detector, a fire extinguisher, and a smoke detector in each accommodation.

Noise-free rooms not guaranteed

Front desk opens daily at 8:00 AM

Front desk closes daily at 10 PM

Staff temperature checks are conducted regularly

Temperature checks are available to guests

Bed sheets and towels are washed at a temperature of at least 60°C/140°F

Commonly-touched surfaces are cleaned with disinfectant

Caters to adults only

Property confirms they are implementing guest safety measures

Contactless check-out is available

Property is cleaned with disinfectant

Staff wears personal protective equipment

Property follows sanitization practices of SafeStay (AHLA - USA)

Protective clothing is available to guests

Masks are available to guests

Debit cards not accepted

Gloves are available to guests

No shield between guests and staff in main contact areas

Guests are provided with free hand sanitizer

Staffed front desk

Social distancing measures are in place

Contactless check-in is available

No cribs (infant beds) available

Carbon monoxide detector

No elevators

Property confirms they are implementing enhanced cleaning measures

Smoke detector

Individually-wrapped food options are available

Individually-wrapped food options are available for breakfast

Minimum guest age is 18

Gap period enforced between guest stays - 24 hours

Fees

You'll be asked to pay the following charges at the property:

  • Spring Break deposit: USD 250 per stay for guests under 21 years old staying between 1 March - 31 March
  • Resort fee: USD 30.78 per accommodation, per night

The resort fee includes:

  • Concierge service
  • Housekeeping
  • In-room coffee
  • In-room safe
  • Internet access
  • Pool access

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

Optional extras

  • Self parking fee: USD 20 per night
  • Rollaway bed fee: USD 75 per day

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

Hotel Names

  • Southernmost House
  • Southernmost House Hotel
  • Southernmost House Hotel Key West
  • Southernmost House Key West
  • Southernmost House
  • The Southernmost House Hotel
  • The Southernmost House Hotel Adults Only
  • The Mansion on the Sea Southernmost House in the USA
  • The Mansion on the Sea - Southernmost House in the USA Hotel
  • The Mansion on the Sea - Southernmost House in the USA Key West

We should mention

Children 18 years old and younger are not permitted at this adults-only property.

Only registered guests are allowed in the guestrooms.

Contactless check-in and contactless check-out are available.

Sorry, we seem to have had an issue loading our review content. Try again?