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The ISO by Castle

3.5 star property
Beachfront resort in Kapaa with outdoor pool and restaurant

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Photo gallery for The ISO by Castle

Outdoor pool
One Bedroom Ocean View (2nd Floor, stair access only) | Living room | 42-inch flat-screen TV with cable channels, TV
One Bedroom Ocean View (2nd Floor, stair access only) | Private kitchenette | Fridge, coffee/tea maker
Beach House Suite (2nd floor, stair access only) | Beach/ocean view
Beach House Suite (2nd floor, stair access only) | Balcony view
Bask in the sun at The ISO by Castle, a beachfront resort with white sand shores and crystal-clear waters. Enjoy snorkeling, an outdoor pool, bike rentals and a refreshing water dispenser.

Reviews

8.4 out of 10
Very good

Popular amenities

Main amenities (9)

  • On the beach
  • Restaurant and bar/lounge
  • Outdoor pool
  • Air conditioning
  • Garden
  • Water dispenser
  • Limited hour front desk
  • Snorkeling
  • Bike rental

Feel at home (6)

  • Refrigerator
  • Private bathroom
  • Television
  • Garden
  • Coffee/tea maker
  • Blackout drapes/curtains
$287 nightly
The total price is $339
Oct 31 - Nov 1
Total with taxes and fees

Room options

Available filters for rooms
Showing 7 of 7 rooms

View all photos for Ocean View (1st - 3rd Upper Floors, stair access only

1 bedroom, laptop workspace, blackout drapes, Internet

Ocean View (1st - 3rd Upper Floors, stair access only

8.6 out of 10
Excellent
(63 reviews)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Separate bedroom
Ceiling fan
Blackout drapes/curtains
  • 290 sq ft
  • Ocean view
  • Sleeps 3
  • 2 Double Beds OR 1 King Bed

View all photos for Ocean Front View (1st - 3rd Upper Floors, stair access only)

Ocean Front View (1st - 3rd Upper Floors, stair access only) | 1 bedroom, laptop workspace, blackout drapes, Internet

Ocean Front View (1st - 3rd Upper Floors, stair access only)

7.8 out of 10
Good
(30 reviews)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Separate bedroom
Ceiling fan
Blackout drapes/curtains
  • 290 sq ft
  • Ocean view
  • Sleeps 3
  • 2 Double Beds OR 1 King Bed

View all photos for Deluxe Room, Ocean View (2nd Floor - stair access only)

Deluxe Room, Ocean View (2nd Floor - stair access only) | Living area | 42-inch flat-screen TV with cable channels, TV

Deluxe Room, Ocean View (2nd Floor - stair access only)

7.8 out of 10
Good
(14 reviews)

Highlights

Balcony
Separate sitting area
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Separate bedroom
Ceiling fan
  • 290 sq ft
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed OR 2 Double Beds

View all photos for One Bedroom Ocean View (2nd Floor, stair access only)

One Bedroom Ocean View (2nd Floor, stair access only) | Private kitchenette | Fridge, coffee/tea maker

One Bedroom Ocean View (2nd Floor, stair access only)

9.0 out of 10
Wonderful
(2 reviews)

Highlights

Balcony
Separate dining area
Separate sitting area
Air conditioning
Free cribs/infant beds
Kitchenette
Refrigerator
Flat-screen TV
  • 580 sq ft
  • 1 bedroom
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed

View all photos for Beach House Suite (2nd floor, stair access only)

Beach House Suite (2nd floor, stair access only) | Living area | 42-inch flat-screen TV with cable channels, TV

Beach House Suite (2nd floor, stair access only)

10.0 out of 10
Exceptional
(1 review)

Highlights

Balcony
Separate dining area
Separate sitting area
Air conditioning
Free cribs/infant beds
Kitchen
Refrigerator
Dishwasher
  • 640 sq ft
  • 1 bedroom
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed

View all photos for Partial Ocean/Pool View (1st - 2nd Upper Floors, stair access only)

Partial Ocean/Pool View (1st - 2nd Upper Floors, stair access only) | View from room

Partial Ocean/Pool View (1st - 2nd Upper Floors, stair access only)

9.6 out of 10
Exceptional
(5 reviews)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Separate bedroom
Ceiling fan
Blackout drapes/curtains
  • 290 sq ft
  • Partial ocean view
  • Sleeps 3
  • 2 Double Beds OR 1 King Bed

View all photos for Premium Ocean Front View (1st - 3rd Upper Floors, stair access only)

Premium Ocean Front View (1st - 3rd Upper Floors, stair access only) | 1 bedroom, laptop workspace, blackout drapes, Internet

Premium Ocean Front View (1st - 3rd Upper Floors, stair access only)

10.0 out of 10
Exceptional
(1 review)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Separate bedroom
Ceiling fan
Blackout drapes/curtains
  • 290 sq ft
  • Ocean view
  • Sleeps 3
  • 1 King Bed

Similar properties

Balcony

Aston Islander on the Beach

  • Pool
  • Connecting rooms available
  • Air conditioning
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8.6 out of 10, Excellent, 1,011 reviews
$205 nightly
The price is $242
Oct 21 - Oct 22
Total with taxes and fees
Aston Islander on the Beach
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About the neighborhood

Map
4-796 Kuhio Hwy, Kapaa, HI, 96746

What's nearby

  • Waipouli Beach - 3 min walk - 0.3 km
  • Coconut Marketplace - 14 min walk - 1.2 km
  • Lae Nani Beach - 3 min drive - 1.5 km
  • Kapa'a Beach Park - 4 min drive - 2.6 km
  • Smith's Tropical Paradise - 6 min drive - 3.0 km

Getting around

  • Lihue Airport (LIH) - 14 min drive

Restaurants

  • ‪McDonald's - ‬4 min walk
  • ‪Starbucks - ‬6 min walk
  • ‪Sensei Sushi Bar And Grill - ‬14 min walk
  • ‪JoJo’s Shave Ice - ‬15 min walk
  • ‪Waipouli Deli & Restaurant - ‬3 min walk

About this property

The ISO by Castle

Situated by the ocean, The ISO by Castle is a great choice for a stay in Kapaa. The outdoor pool is a great spot to take a dip, and guests can grab a bite to eat at The Bullshed Restaurant, which serves local cuisine and is open for dinner. Other highlights include a bar/lounge and a garden. Fellow travelers love the pool and helpful staff.

At a glance

DONE

Hotel size

    • 78 units
    • Arranged over 3 floors
DONE

Arriving/Leaving

    • Check-in start time: 3:00 PM; Check-in end time: 10:00 PM
    • Minimum check-in age: 18
    • Check-out time is 11 AM
    • Late check-out subject to availability
DONE

Special check-in instructions

    • The front desk is open daily from 7:00 AM - 10:00 PM
    • Front desk staffed during limited hours
DONE

Required at check-in

    • Credit card, debit card, or cash deposit required for incidental charges
    • Government-issued photo ID may be required
    • Minimum check-in age is 18
DONE

Pets

    • Pets not allowed
DONE

Other information

    • Smoke-free property

Property amenities

Food and drink

  • Restaurant
  • Bar/lounge
  • Water dispenser

What to do

  • On the beach
  • Yoga classes
  • Snorkeling
  • Golfing nearby

Services

  • Front desk (limited hours)
  • Bicycle rentals

Facilities

  • 5 buildings/towers
  • Garden
  • An outdoor pool
  • Water dispenser

Room amenities

Be entertained

  • 42-inch flat-screen TV
  • Cable TV channels

Home comfort

  • Air conditioning
  • Ceiling fan
  • Coffee/tea maker

Sleep well

  • Blackout drapes/curtains
  • Bed sheets provided

What to enjoy

  • Balcony

Freshen up

  • Private bathroom
  • Shower/tub combination
  • Free toiletries
  • Towels

Stay connected

  • Laptop-friendly workspace

Food and drink

  • Refrigerator

Special features

Dining

The Bullshed Restaurant - This beachfront restaurant specializes in local cuisine and serves dinner only. Guests can enjoy drinks at the bar.

Fees & policies

Mandatory fees

You'll be asked to pay the following charges by the property at check-in or check-out. Fees may include applicable taxes:
  • Resort fee: USD 35.38 per accommodation, per night
  • Resort fee inclusions:
    • Additional inclusions
    • Fitness/yoga classes
    • Newspaper
    • Parking
    • Self parking
    • WiFi access (may be limited)

Optional extras

  • Late check-out can be arranged for an extra charge (subject to availability)

Policies

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.
Only registered guests are allowed in the guestrooms.
This property does not have elevators.
Guests can rest easy knowing there's a smoke detector on site.
This property accepts credit cards and debit cards. Cash is not accepted.
Credit cards accepted: Visa, Mastercard, American Express, Discover
State tax ID - W-34434930-01

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

Frequently asked questions

Does The ISO by Castle offer free cancellation for a full refund?

Yes, The ISO by Castle does have fully refundable room rates available to book on our site. If you’ve booked a fully refundable room rate, this can be cancelled up to a few days before check-in depending on the property's cancellation policy. Just make sure to check this property's cancellation policy for the exact terms and conditions.

Is there a pool at The ISO by Castle?

Yes, there's an outdoor pool.

Are pets allowed at The ISO by Castle?

Sorry, pets aren't allowed.

What are the check-in and check-out times at The ISO by Castle?

Check-in start time: 3:00 PM; Check-in end time: 10:00 PM. Check-out time is 11 AM. Late check-out is available for a charge (subject to availability).

What is there to do at The ISO by Castle and nearby?

Have fun during the warmer months with activities such as snorkeling. Additional recreation onsite includes yoga. Enjoy a swim in the outdoor pool or use the resort's other amenities, which include a garden.

Are there restaurants at or near The ISO by Castle?

Yes, The Bullshed Restaurant offers beachfront dining and local cuisine.

Does The ISO by Castle have any outdoor private spaces?

Yes, every room features a balcony.

What's the area around The ISO by Castle like?

The ISO by Castle is a short 10-minute walk from Waipouli Beach and 16 minutes' walk from Coconut Marketplace. Travelers give top marks for the resort's prime location.

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The ISO by Castle Reviews

Reviews

8.4

Very Good

8.8/10

Cleanliness

8.4/10

Staff & service

8.0/10

Amenities

8.2/10

Property conditions & facilities

8.4/10

Eco-friendliness

Popular mentions

Room
Service staff
Location
View
Ocean
Restaurant
Breakfast
Beach
Ocean view
Biking

What guests liked

  • The property's beach location offers stunning ocean views, direct access, and a serene atmosphere. (40 reviews)
  • The pool was a highlight, described as wonderful, nice, great, and inviting, with many guests enjoying its location and cleanliness. (26 reviews)
  • The on-site restaurant offered great food and cocktails, with one guest even dining there three times during their stay. (6 reviews)
AI Sparkle IconFrom real guest reviews summarized by AI.

Reviews

10/10 Exceptional

It's a great hotel, near the airport and the main road to go anywhere in Kauai. I will definitely stay there again.
Hallei, 4-night trip

8/10 Very good

Great location nice restaurant attached to Hotel. No beach for swimming though but very nice location on the water. Nice pool very quiet location.
Paul, 2-night trip

10/10 Exceptional

Had a lot of amenities like a nice grab and go breakfast as well as bikes you could rent out. They also did morning yoga and had a great pool.
Kiarah, 2-night trip

8/10 Very good

Great location, bikes were nice for the bike path, breakfast,grab and go was helpful.. property was older but well kept.
Donna, 4-night trip

10/10 Exceptional

amazing view nice hotel
Irvin, 4-night trip

10/10 Exceptional

Amazing place to stay in Kauai! 10/10 recommend. Friendly staff, prime location, beautiful grounds, clean rooms!
Hayley, 3-night trip

10/10 Exceptional

Our stay was great! The ISO is in a great location within walking distance to several beaches and food options.
Kyle, 2-night trip

10/10 Exceptional

The ISO is a great affordable option to some of the other overblown resorts in the area. Rooms are clean and comfortable, staff is helpful, and the hotel is conveniently located close to some great restaurants and island excursions. While it may not have the bells and whistles of nearby options, it has a pool, a great continental breakfast, and EVERY room is ocean-view.
Brian, 7-night trip

10/10 Exceptional

Great views outside the balcony
DWARAKESH, 3-night trip

10/10 Exceptional

Nothing to dislike like about the stay. Will recommend for friends for certain who want to visit Kauai. Experience was amazing, along with the staff.
Steve, 2-night trip

10/10 Exceptional

Great location, friendly staff, good amenities
Celina, 4-night trip

8/10 Very good

Older establishment but very clean, great view and good restaurant nearby. Only couple of blocks from coconut market. Gave you privacy only tidied your room upon request. Affordable.
View from our room.
Cynthia, 7-night trip

6/10 Good

Great location but dated.

The pros: great location - could not be closer to the ocean. Sound of the waves at night was awesome. Friendly staff and nice paths to walk. Cons: dated rooms with a musty smell. Not much space and the outside needed some updates. Parking is cramped.
Elizabeth, 4-night trip

10/10 Exceptional

Property is a good location very Central

Staff is extremely friendly & knowledgeable one AC did not work & second room. AC was adequate, but could’ve been a little colder. property was in good shape
Wallace, 7-night trip

10/10 Exceptional

Quiet, serene and conveniently located.
Natania Delfin, 3-night trip

8/10 Very good

Decent location, very clean rooms and property. Great walking path along the beach and hotels.
Alexandra, 7-night trip

8/10 Very good

A little tired the property is, but with free bikes, a pool and great views to the beach- we were satisfied. Breakfast has some fresh fruit, sweet yogurt and bakery items. Staff were hit and miss (afternoon shift was lovely).
Marcus, 3-night trip

10/10 Exceptional

It was just what I needed. Cozy bed, ocean waves lull me to sleep, Bullshed great dinner and a hot shower. Awesome a R&R
sophia, 1-night trip

10/10 Exceptional

We love the ISO! The proximity of the ocean, the quiet enjoyment of the phenomenal view, and the sunrise from the rooms are priceless. Great location, friendly stuff, and pleasant stay to enjoy this wonderful island!
Serine, 7-night trip

8/10 Very good

Overall I enjoyed my stay. The views were gorgeous. Everything was clean. The pool was great and the beach access there was awesome. All the staff was lovely as well. There were just some maintenance that would really round out the entire experience.
Maitland E, 8-night trip

10/10 Exceptional

Great views. Great vibes
Andreanna, 1-night trip

8/10 Very good

Nice

Pleasant stay. Clean and comfortable. Staff was excellent, very accomodating. Beautiful ocean view.
Anita, 1-night trip

8/10 Very good

Hotel was nice but a little outdated room was clean liked the grab n go breakfast good location
Laurie, 5-night trip

8/10 Very good

The breakfast could use a few more selections and a coffee pot. The amenities were unique and nice! The bikes, morning yoga as well as the pool were nice to have! As well as the unique welcoming gifts. The cleanliness of the room was just okay. Noticed lots of dirt that was just missed as well as the room smelled of mildew.
Clint Eric, 6-night trip

8/10 Very good

It was ok. Shower didnr work wekl and couldn't get them to fix it. Continental breakfast was grab and go cold cereal, granola bars, yogurt etc. The pool waz nice
Onell, 5-night trip