Adults only

The ISO by Castle

★★★
4-796 Kuhio Hwy, Kapaa, Hawaii, 96746, Kapaa, US
8.4 Very good · 152 reviews
LIH

About this property

Discover your tropical escape at The ISO by Castle, where paradise meets comfort in the heart of Kapaa.

Recreational Amenities
Unwind under the sun at our sparkling outdoor pool or explore the stunning coastline with our bicycle rentals, perfect for both relaxation and adventure.

Culinary Delights
Savor the flavors of the region at The Bullshed Restaurant, a beachfront eatery that offers a delightful bar/lounge experience and serves up local cuisine to tantalize your taste buds.

Comfort and Convenience
Retreat to one of our 78 air-conditioned rooms, each equipped with modern amenities including flat-screen TVs, refrigerators, and private balconies for stunning views, ensuring a restful stay.

Experience the beauty of Waipouli and make your getaway unforgettable. Book your stay at The ISO by Castle today!

Guest highlights

Guests loved
  • Great location
  • Friendly staff
  • Good value for money
Could be better
  • Cleanliness issues
  • Limited dining options
  • Room quality concerns

Guest reviews

8.4
10.0
Wesley couple

"Awesome place; I love Kwaii"

Perfect location, friendly staff, and the complimentary newspapers weee great! Wonderful place.

I couldn’t tell ya

2026-07 Nuitee
9.0
Stefania family_with_children

"Una finestra sul mare sull’isola di Kauai"

L’hotel si affaccia sul mare e la vista è impagabile. Abbiamo apprezzato moltissimo i servizi proposti, dalla colazione Grab&Go, all’omaggio delle borracce con i refill di acqua alle lezioni di yoga gratuite

2026-07 Nuitee

Facilities

Swimming poolGardenWheelchair accessibleGolfing nearbyFront desk (limited hours)Smoke-free propertySnorkeling on siteWater dispenser

Room options

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

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

1 King bed · 1 Sofa bed 54 m² 4 guests Ocean View
Air conditioningKitchenetteCoffee/tea makerPrivate bathroom +13 more
Deluxe Room, Ocean View (2nd Floor - stair access only)

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

1 King bed · 1 Sofa bed 27 m² 4 guests Ocean View
Air conditioningCoffee/tea makerPrivate bathroomTV +10 more
Beach House Suite (2nd floor, stair access only)

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

1 King bed · 1 Sofa bed 59 m² 4 guests Ocean View
Air conditioningKitchenCoffee/tea makerPrivate bathroom +22 more
Partial Ocean/Pool View (1st - 2nd Upper Floors, stair access only)

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

1 King bed 27 m² 3 guests Partial Ocean View
Air conditioningCoffee/tea makerPrivate bathroomTV +8 more
Ocean View (1st - 3rd Upper Floors, stair access only

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

1 King bed 27 m² 3 guests Ocean View
Air conditioningCoffee/tea makerPrivate bathroomTV +9 more
Ocean Front View (1st - 3rd Upper Floors, stair access only)

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

1 King bed 27 m² 3 guests Ocean View
Air conditioningCoffee/tea makerPrivate bathroomTV +9 more
Premium Ocean Front View (1st - 3rd Upper Floors, stair access only)

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

1 King bed 27 m² 3 guests Ocean View
Air conditioningCoffee/tea makerPrivate bathroomTV +8 more

Good to know

Check-in
From 03:00 PM until 10:00 PM
Check-out
By 11:00 AM
Pets
No pets allowed
Children
Adults only
Pets

Pets not allowed

Children and extra beds

No rollaway/extra beds available

Guest type

Essential workers only - NO

Accessibility

No elevators

General

Professional property host/manager

Important information

<ul> <li>Only registered guests are allowed in the guestrooms. </li> </ul>

Location

View on Google Maps

4-796 Kuhio Hwy, Kapaa, Hawaii, 96746, Kapaa, US

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