With a stay at THE ISO HOTEL, Trademark Collection by Wyndham in Kapaa (Waipouli), you'll be within a 15-minute drive of Coconut Marketplace and Kauai Museum. .This beach resort is 8.6 mi (13.8 km) from Nawiliwili Harbor and 8.8 mi (14.2 km) from Kalapaki Beach.
THE ISO HOTEL, Trademark Collection by Wyndham offers 78 air-conditioned accommodations with complimentary toiletries and ceiling fans. Rooms open to balconies. 42-inch flat-screen televisions come with cable channels. Guests can make use of the in-room refrigerators and coffee/tea makers. Bathrooms include shower/tub combinations.
Recreational amenities at the resort include an outdoor pool.
The recreational activities listed below are available either on site or nearby; fees may apply.
Make yourself at home in one of the 78 air-conditioned rooms featuring refrigerators and flat-screen televisions. Rooms have private balconies. Cable television is provided for your entertainment. Bathrooms have shower/tub combinations and complimentary toiletries.
Be sure to enjoy recreational amenities including an outdoor pool and bicycles to rent.
Enjoy local cuisine at The Bullshed Restaurant, a beachfront restaurant which features a bar/lounge.
The front desk is staffed during limited hours.
The Bullshed Restaurant - This beachfront restaurant specializes in local cuisine and serves dinner only. Guests can enjoy drinks at the bar. Open daily.
Property amenities
Internet
Available in all rooms: High-speed internet
Food and drink
A bar/lounge
A restaurant
Restaurants on site
The Bullshed Restaurant
Things to do
Bicycle rentals
Outdoor pool
Snorkeling
Yoga classes
Family friendly
In-room refrigerator
Outdoor pool
Conveniences
Limited-hour front desk
Water dispenser
Outdoors
Garden
On the beach
Accessibility
No elevator
More
3 floors
5 buildings
Smoking not allowed
Water dispenser usage encouraged
Room amenities
Bedroom
Bedsheets provided
Blackout drapes
Bathroom
Free toiletries
Private bathroom
Shower/bathtub combination
Towels provided
Entertainment
42-inch flat-screen TV with cable channels
Food and drink
Coffee/tea maker
Refrigerator
More
Air conditioning
Ceiling fan
Laptop workspace
Policies
Check-in
Check-in start time: 3:00 PM; Check-in end time: 10:00 PM
Minimum check-in age: 18
Check-out
Check-out before 11 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 7:00 AM - 10:00 PM
Front desk staffed during limited hours
Information provided by the property may be translated using automated translation tools
Access methods
Front desk (limited hours)
Pets
Pets not allowed
Children and extra beds
Children are welcome
Rollaway/extra 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 35.61 per accommodation, per night
The resort fee includes:
Additional inclusions
Fitness/yoga classes
Newspaper
Parking
Self parking
We have included all charges provided to us by the property.
Optional extras
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
Tax ID - W-34434930-01
This property accepts credit cards and debit cards; cash is not accepted
Safety features at this property include a smoke detector
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
This property does not have elevators
Only registered guests are allowed in the guestrooms
Property is also known as
Castle Mokihana
Castle Mokihana Hotel
Castle Mokihana Hotel Kapaa
Castle Mokihana Kapaa
Mokihana Of Kauai Hotel Kapaa
ISO. Island. Sky. Ocean. Resort Kapaa
ISO. Island. Sky. Ocean. Resort
ISO. Island. Sky. Ocean. Kapaa
ISO. Island. Sky. Ocean.
ISO Sky Ocean Resort Kapaa
The ISO by Castle Kapaa
The ISO by Castle Resort
The ISO. Island. Sky. Ocean.
The ISO by Castle Resort Kapaa
THE ISO HOTEL, Trademark Collection by Wyndham Reviews
Reviews
8.4
Very Good
All reviews shown are from real guest experiences. Only travelers who have booked a stay with us can submit a review. We verify reviews according to our guidelines and publish all reviews, positive or negative.
Rating 10 - Excellent. 489 out of 1002 reviews
10 - Excellent
489
Rating 8 - Good. 301 out of 1002 reviews
8 - Good
301
Rating 6 - Okay. 134 out of 1002 reviews
6 - Okay
134
Rating 4 - Poor. 40 out of 1002 reviews
4 - Poor
40
Rating 2 - Terrible. 38 out of 1002 reviews
2 - Terrible
38
8.6/10
Cleanliness
8.6/10
Staff & service
8.0/10
Amenities
8.2/10
Property conditions & facilities
Reviews
Verified
8/10 Good
Natalia
Apr 4, 2026
Liked: Cleanliness, staff & service, amenities
View was great
Natalia
Stayed 6 nights in Mar 2026
Verified
10/10 Excellent
Serena
Apr 20, 2026
Liked: Staff & service
Disliked: Amenities
Breakfast was super simple grab an go staff award one parking great ! Not a ton to do at the hotel itself
The room and all the area are very clean. The staff are very nice especially the people who are assigned at cleaning and doing laundry they always have a huge smile and always greets us warmly.
The ISO is amazing to stay at while visiting Kauai. Fresh fruit and snacks daily, the ocean views, pool fun and close to shops. The staff is incredible. The best was being able to watch the whales from our room. Second year in a row for us and can't wait to return.
The grounds are stunning, the pool was well maintained and ocean views are breathtaking. The staff were attentive and helpful. The rooms are comfortable and clean. The location is great if you are planning to spend time on the north and south shores, helps reduce driving times if you are planning to be very active!