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The ISO by Castle

eeef - (888) 420-1657
The ISO by Castle, 4-796 Kuhio Highway, Kapaa, HI -(888) 420-1657
Area: Kapaa - Lihue
(Map)
4.5
HOTEL RATING: 
VERY GOOD
4.5 out of 5 (1150 Ratings)
1.4 miles from Kapaa centre
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The Spotlight on The ISO by Castle

Beachfront Vibes with Concert Convenience in Kapaa

Modern island style meets laid-back comfort at The ISO, a breezy oceanfront hotel in Kapaa. With its prime location just across from Waipouli Town Center and only a 15-minute drive from Lihue Airport, this hotel offers an ideal base for exploring Kauai and catching a show. Each studio has a touch of Hawaiian flair, with private patios and coffee-making facilities, plus free WiFi to plan your concert night.

Why Concert-goers love it

If you're in town for a show, you'll love the relaxed beachfront setting that’s still close to local venues. It's easy to wind down after a high-energy night thanks to the peaceful oceanfront pool and quiet property layout. Free parking makes late-night arrivals a breeze, and its central Kapaa location means you're never far from where the music happens.

Who this Hotel is great for

Groups of friends will enjoy the on-site amenities like tennis and shuffleboard courts for daytime fun.
Solo travelers chasing their dream concert will appreciate the quiet, easygoing atmosphere.
Couples can turn a concert night into a romantic beach weekend.
Fans wanting a quieter post-concert recovery space will find the ocean sounds and laid-back setting ideal.
Budget-conscious music fans will appreciate the value of free parking and included WiFi.

Food and Drink Options

The on-site Bullshed Restaurant serves up seafood and steak with a side of ocean views, perfect for a pre-show dinner or a celebratory bite after. While there's no 24/7 room service, the restaurant is open nightly, and you're walking distance to local eateries for late-night snacks. Coffee-making facilities in each room mean you’ll never miss a morning brew, even after a long night.

Nightlife Options

While The ISO itself leans more peaceful than party, it’s close to Kapaa’s low-key bars and lounges. For those looking to continue the night, nearby local spots offer laid-back drinks and occasional live music. Or, take in the sunset and sip something local at the hotel’s serene beachfront setting.

What People Say

Guests rave about the unbeatable ocean views, friendly staff, and the relaxing vibe that makes it easy to unwind. Reviewers also highlight the clean, cozy rooms and convenient location near dining and shops. The Bullshed Restaurant gets high marks for both food and atmosphere.

Areas for Improvement

The rooms are more about comfort than luxury, so if you're looking for upscale finishes, this might feel a bit simple. Some guests mention that the property could use a few updates, and that oceanfront living means occasional humidity indoors. But for most, the charm and location more than make up for it.

The Bottom Line

The ISO is a relaxed, oceanfront retreat that gives concert-goers the perfect mix of location, comfort, and chill Hawaiian vibes.
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Amenities View More
y
Free Internet
j
Free Parking
u
Swimming Pool
E
Fitness Center
w
Non Smoking
x
Free Breakfast
A
Business Center
B
Airport Shuttle
r
Pets Allowed
q
Accessible
Other Amenities
` Free Parking
` Restaurant
` Swimming Pool
` Parking
` Air Conditioning
` Bar
` Bicycle rental
` Internet services
` Non-smoking throughout
` WiFi
` Beachfront
` outdoor pool
` Beach
` Non-smoking Rooms
` Free WiFi
` Yoga classes
` Key card access
` Use of cleaning chemicals that are effective against Coronavirus
` Staff follow all safety protocols as directed by local authorities
` Linens, towels and laundry washed in accordance with local authority guidelines
` Guest accommodation is disinfected between stays
` Hand sanitizer in guest accommodation and key areas
` Parking on site

The ISO by Castle Guest Reviews

Overall Average Score: 
Very Good (4.5 out of 5)

Write a review

5

Exceptional - 5.0 out of 5

Daniel Sat, 10 May 2025

Exceptional

4.5

Wonderful - 4.5 out of 5

Vivek Sun, 4 May 2025

Awesome Views and Proximity to...

Liked: Views Yoga classes ,Bikes, Proximity, Staff
Disliked: Breakfast was not upto the mark.The Cafe too was not upto the level where there is a Big oppurtunity like Lava Lava

5

Exceptional - 5.0 out of 5

Harshit Sun, 4 May 2025

Exceptional

4.5

Wonderful - 4.5 out of 5

Marie Thu, 1 May 2025

All in all , loved...

Liked: We came in a day early and they were able to find us room and then upgraded our room ! Our room was right at the beach ...loved it ! Loved listening to the ocean at night ...lulled me to sleep. Had a glitch with the TV but they fixed that asap. Bed was comfy...over all great experience. We would stay there again:)
Disliked: A few things would be nicer next time ... if they lit the place up with the torches every night and added more of them. Wear and tear of seating at the fire pit area, more outdoor activities , games possibly , besides yoga and bikes.

5

Exceptional - 5.0 out of 5

Ma Mon, 28 April 2025

Good

Liked: Close to stores an beach
Disliked: Stairs. Third floor no elevator

4

Very Good - 4.0 out of 5

Sylvia Sun, 27 April 2025

Enjoyable stay

Liked: Given a top floor room overlooking the pool and ocean, clean and very comfortable bed with drip filter coffee in room. Filtered water available in reception, breakfast items are sugar loaded but fresh pineapple and yoghurt was welcome. Staff friendly and helpful, thanks for assisting with opening a corked bottle! :)
Disliked: Really could have used a desk or table in the room. There was many chairs but no table! (other than the low table on the balcony). Made it uncomfortable to use my tablet when I needed to, which was often. Suggest to remove the two chairs and stool and replace with a sit-at table and chair.

4

Very Good - 4.0 out of 5

Michael Sun, 27 April 2025

Very good

2.5

Fair - 2.5 out of 5

Kyosenshi Sun, 27 April 2025

Good location, everything else not...

Liked: Good location with ocean view. Staff were nice and helpful.
Disliked: Honestly, it felt like a glorified Days Inn. The beds were hard, and there were no phones in the room to call the lobby. No microwave was a bummer, so you can't heat up food in the fridge. There didn't seem to be a heating function in the air unit. Breakfast was sparse for a hotel claiming to be a resort. No elevator, so be prepared to lug your luggage up a few flights of stairs if on the 2nd or 3rd floor. Their morning church service on Easter woke us up promptly at 6:30am with music coming through speakers. What happened to quiet hours being between 10pm and 8am? Water pressure was no good. For $200-300 per night, I expect better imo.

3

Pleasant - 3.0 out of 5

Priyanka Thu, 24 April 2025

It’s an old hotel but...

Liked: The grab and go breakfast was pretty decent and not really found at many hotels. The bag and bottle as a gift was pretty handy and useful. Morning yoga and free bikes was a great addition.
Disliked: The bikes did not have child car seat. Kids bike also not available. Will be great if we could also keep few of those for people with family to enjoy too! Keeping spare umbrellas for guests without car can be very handy too since it rains so much :)

5

Exceptional - 5.0 out of 5

Wioletta Mon, 21 April 2025

Exceptional

Liked: Comfortable apartment with a beautiful view of the ocean. The staff was very friendly and helpful. We enjoyed yoga classes, bicycles and the swimming pool very much. Thank you for your hospitality!

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The ISO by Castle 4-796 Kuhio Highway, Kapaa, HI