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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) | Private kitchenette | Fridge, coffee/tea maker
Beach House Suite (2nd floor) | Balcony view
Exterior
Ocean View (1st - 3rd Upper Floors) | Laptop workspace, blackout drapes, Internet, bed sheets

Reviews

8.4 out of 10
Very good
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.

Popular amenities

  • Bar
  • Air conditioning
  • Non-smoking

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
The current price is $232
includes taxes & fees
$196 per night
Apr 27 - Apr 28

Room options

Available filters for rooms
Showing 7 of 7 rooms

View all photos for Ocean Front View (1st - 3rd Upper Floors)

Laptop workspace, blackout drapes, Internet, bed sheets

Ocean Front View (1st - 3rd Upper Floors)

Highlights

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

View all photos for Ocean View Deluxe Room (2nd Floor)

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

Ocean View Deluxe Room (2nd Floor)

Highlights

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

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

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

Partial Ocean/Pool View (1st - 2nd Upper Floors)

Highlights

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

View all photos for Ocean View (1st - 3rd Upper Floors)

Ocean View (1st - 3rd Upper Floors) | Laptop workspace, blackout drapes, Internet, bed sheets

Ocean View (1st - 3rd Upper Floors)

Highlights

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

View all photos for Beach House Suite (2nd floor)

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

Beach House Suite (2nd floor)

Highlights

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

View all photos for One Bedroom Ocean View (2nd Floor)

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

One Bedroom Ocean View (2nd Floor)

Highlights

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

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

Laptop workspace, blackout drapes, Internet, bed sheets

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

Highlights

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

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The price is $262
includes taxes & fees
$222 per night
May 6 - May 7
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About the neighborhood

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

What's nearby

  • Waipouli Beach - 10 min walk - 0.9 km
  • Coconut Marketplace - 16 min walk - 1.3 km
  • Lae Nani Beach - 3 min drive - 1.8 km
  • Lydgate Beach - 6 min drive - 3.8 km
  • Kapa'a Beach Park - 8 min drive - 2.3 km

Getting around

  • Lihue Airport (LIH) - 14 min drive

Restaurants

  • ‪Island Country Markets #93 - ‬16 min walk
  • ‪Starbucks - ‬6 min walk
  • ‪Lava Lava Beach Club - Kauai - ‬3 min drive
  • ‪Tropical Dreams Hawaiian Gourmet Ice Cream - ‬7 min walk
  • ‪Burger King - ‬18 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.

Languages

English

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

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

8.4/10

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 beach location is perfect with stunning ocean views, easy access, and beautiful sunrises. (35 reviews)
  • The pool was spacious, rarely busy, and well-maintained with a beautiful location overlooking the ocean. (21 reviews)
  • The on-site restaurant served good food, and the nearby steakhouse, Bull Shed, was outstanding with amazing cocktails and food. (4 reviews)
From real guest reviews summarized by AI.

Reviews

8/10 Very good

Nice

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

10/10 Exceptional

We had an amazing stay at this property.
Alexi, 4-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 location is great.
Yanxin, 4-night trip

10/10 Exceptional

This was a delightful hotel with a lovely swimming pool and beautiful lawn on which we could relax and look at the ocean.
Ellen, 3-night trip

10/10 Exceptional

Great property.

We really enjoyed our stay at the ISO. The hotel met our needs for our 4 night stay. It is centrally situated so it was easy to explore. Clean rooms, comfortable bed and super friendly staff. Good dinner restaurant on property. Good selection of continental breakfast foods. Amazing sunrises! We would stay again if we come back to Kauai.
Beautiful sunrises
Lorna, 4-night trip

8/10 Very good

Right on the beach, excellent price
Robert, 4-night trip

10/10 Exceptional

Great place
Kevin, 4-night trip

8/10 Very good

Love the ISO. Affordable and nice. Love the bike rentals and the Kapaa coastline.
Elise, 3-night trip

10/10 Exceptional

Great location and property. AC was a little finicky but overall worth the stay for the price, and the view!
Andrew, 3-night trip

10/10 Exceptional

Staff super friendly and the breakfast super convenient saves you aome bucks
Hugo, 6-night trip

10/10 Exceptional

The staff and the room was the best
Geoffrey, 2-night trip

10/10 Exceptional

Really enjoyed my stay at The ISO...I really love the bikes...I just wish they had a washer and dryer, maybe 2 of each...Great stay
Corey, 4-night trip

8/10 Very good

Morning yoga was a lovely touch
Frederic, 4-night trip

8/10 Very good

Solid choice in Kauai!

Great ocean view and super close access to the beach! Very clean and quiet room!
Yebin, 3-night trip

10/10 Exceptional

Right on the ocean. Grab and go breakfast a bonus. Friendly staff.
Bev, 3-night trip

10/10 Exceptional

Close to beach and they have a restaurant in the back!
Bharath Tumkur, 2-night trip

10/10 Exceptional

Great ocean views
Brent, 3-night trip

6/10 Good

Not so clean out dated room good location
Jordan, 5-night trip

10/10 Exceptional

Very happy with our stay at The ISO —especially the free bike rentals, morning yoga and other amenities. 10/10 would recommend
Eunice, 4-night trip

8/10 Very good

The pool and grounds were wonderful. Free continental breakfast - especially for fresh arrivals - was a hugely appreciated. The free bikes were also a terrific treat, especially as the oceanside bike path is just around the corner
Michael, 1-night trip

10/10 Exceptional

Yoga on the beach every morning 7-8 was wonderful and the bikes in the lobby were free to use. Ver nice property, I really enjoyed my stay.
Anne, 2-night trip

8/10 Very good

The location was good. While it is an older property, it was clean and comfortable. Free grab and go breakfasts were great and a big cost saver. While no gym, daily yoga classes were lovely
Chukwuemeka, 3-night trip

10/10 Exceptional

Value for money at Ksuai

Very homely
Susmit, 5-night trip

4/10 Fair

good location, needs a refresh

Grab & go breakfast was convenient and the location was good - near grocery store and restaurants with an ocean view. Our room, however, was quite run down and even though I reserved a king bed, we were given two doubles with no other options available. Isn't that what a reservation is for?
Stephanie, 5-night trip