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At a Glance

Discover Your Perfect Balance At The ISO

Embrace east Kauai bliss. Fresh from an extensive modernization and rebranding, the former Mokihana Resort has emerged as The ISO, an oceanfront boutique hotel where island, sky and ocean create a seamless balance of relaxation and rejuvenation.

Seducing with re-imagined aesthetics and perks, the chic 79-suite Royal Coconut Coast retreat continues to celebrate an iconic oceanfront setting that inspires wellness, renewal and discovery. New lifestyle touches include a bell/valet team, 24-hour front desk, WiFi, courtyard yoga and fitness sessions, and daily breakfast of fresh island fruits, yogurt and granola.

Begin every day your way. Then springboard to the natural wonders, recreation, activities and culture defining the heart and soul of Hawaii’s “Island of Discovery.”

Quick Facts

Check-in times - & - front desk information

  • Check-In Time
    After 3:00 PM

  • Check-Out Time
    Before 11:00 AM

Front Desk Hours: 24 hours a day / 7 days a week

Getting to The ISO

4-796 Kuhio Highway, Kapaa, Hawaii 96746
Directions from the Airport (7 miles - 15 minutes)

Exit the Lihue Airport and turn right at the first traffic signal onto Kapule Highway/ Highway 51. Continue on Kapule Highway / Highway 51 until it intersects with Kuhio Highway / Highway 56. Drive a little less than 5 miles, turn right onto Kamoa Road (across from McDonalds). Destination will be straight ahead.

Airport Transportation: Speedi Shuttle offers affordable island wide door to door service at a fixed rate, from the airport to all of Castle Resorts & Hotes. Visit the Castle Speedi Shuttle portal and arrange a pickup online.

Credit Cards Accepted

  • MasterCard
  • American Express
  • Discover
  • Diners
  • Visa
  • JCB
  • China UnionPay
  • BC Global

Frequently Asked Questions

You'll find quick answers to your biggest questions about Mokihana below.

Resort & Reservations

Will my credit card get charged?

Yes, your card will be charged the required deposit at booking. If you are booking a non-refundable rate, your card will be charged the entire stay at booking.

Are there any additional fees that I should know about?

A daily resort fee of $19.00 plus tax will be charged upon check-in. Resort fee includes: water bottle, water refill station, bicycle use, Yoga and other fitness options on the lawn, parking and WiFi.

Is the deposit refundable?

Yes, as long as the cancellation does not fall within the cancel period.

What is your cancellation policy?

Please refer to our Policies Section below.

How do I modify or cancel my reservation?

To modify or cancel your reservation, please call (800) 367-5004 or +1 (808) 545-3510.

What time is check-in? Check out?

Standard check in time is after 3pm HST and check out is before 11am HST.

What are your front desk hours & after hours procedures?

Front Desk hours are 24 hours a day / 7 days a week.

Can I request an early check in or late check out?

You may request for early checkin or late checkout, which will be subject to availability. Fees may apply.

I didn't receive a confirmation. How can I check if my reservation went through?

If you made an online reservation, you will be receiving an email confirmation. Please check your spam/junk mail folder if you have not received anything. To reconfirm your reservation, you can call our customer representative at (800) 367-5004 or send us an email

Can I upgrade my room?

Yes, you can upgrade to a larger suite or room with a view. Call us at (800) 367-5004 and a customer representative will be delighted to assist you.

Do you have a resort fee, what is the fee, & what does it include?

Yes, we have a daily resort fee of $19 plus tax that will be charged upon check-in. Resort fee includes water bottle, water refill station, bicycle use, Yoga and other fitness options on the lawn, parking and WiFi

Are requests guaranteed?

You may make requests at the time of booking. Please note, requests are not guaranteed but we will do our best to accommodate all requests.

Where can I see a complete list of all reservations policies?

Please refer to our Policies Section below.


Do you offer cribs?

Cribs are available free of charge (subject to availability).

Do the rooms include internet access?

WiFi is available in the room and lobby

Do you provide housekeeping service?

Yes, daily housekeeping is provided.

What amenities do the rooms have?

For a full list of amenities, please visit our Guest Rooms page.

Do you offer smoking rooms?

All our rooms are non smoking in compliance with state law.

Do you offer ADA rooms, how many and which room types?

We do not offer 100% ADA-compliant rooms at this time, but are currently working on it. We do offer rooms with a roll-in shower and ADA-friendly configuration. Please contact us to book.


What bath amenities do you provide?

Complimentary bathroom amenities include shampoo, conditioner, body lotion, facial soap, and body soap.

Do you have a pool and Jacuzzi?

Our pool is open daily from 9am - 10pm. We do not have a Jacuzzi.

Do you provide beach or pool towels?

Yes, we provide beach towels.

How many floors and elevators do you have?

We have 3 floors with no elevators.

What bedding options are available?

All hotel rooms include 1 King or 2 Double beds. Our 1 Bedroom Ocean View rooms have 1 King bed with a pull-out sofa or 1 Queen bed with a pull-out sofa.

Bedding selections are provided by request only and we do not guarantee the requested bedding type. We do, however, do the very best we can to accommodate your requests.

Do you allow pets?

Pets are not allowed in our guest rooms and resort area, with the exception of service animals. Noncompliance with this policy can result in a penalty fee and dismissal from the property.


Do you have a restaurant, if not what are the closest restaurants and distance?

Yes. The Bullshed Restaurant is located in the building next to the putting green. It is open 7 days a week from 4:30 pm - 9:30 pm. There are also several shops and eateries nearby.


Do you offer transportation?

Public transportations are available from the airport to the property, including car, shuttle, taxi and public transit. Our properties do not offer airport shuttles or transfers.

How close are you to the beach?

While The ISO is a oceanfront resort, the beach fronting our resort is not swimmable. The closest swimable beach is Lydgate beach park.

How far are you from the airport?

Approximately 7 miles or a 15 minute drive.

Airport taxi service?

Yes, we call a taxi for you as needed and requested.

Do you offer parking?

Self parking is included in the resort fee.


Room Type - Payment & Cancellation Policies

Room Type - Payment Policy

All reservations require a deposit of one night plus Hawaii General Excise Tax to be charged at the time of booking. The remaining balance is due upon check-in.

The credit card used for the deposit must be in guest’s name or in the name of a member in the traveling party. The outstanding balance will be collected upon check–in, if not provided prior to arrival. Reservations are not confirmed.

Room Type - Cancellation Policy
  • Cancellation Policy

    Refundable if cancelled 4 days or more prior to arrival, 3 days or less to arrival forfeits 1 night + General Excise Tax (including no-shows).

General Policies

Packages & Corporate Club

Please visit if you have booked a package deal or as a corporate club member to see specific deposit & cancellation policies, package inclusions, and a comprehensive list of all applicable terms & conditions for your selected package.

Taxes and Fees
  • Room rates are subject to Hawaii General Excise Tax and Transient Accommodations Taxes, which currently totals 14.962%.
  • A daily resort fee of $19.00 plus tax will be charged to guest upon check-in. Resort fee includes: water bottle, water refill station, bicycle use, Yoga and other fitness options on the lawn, parking and WiFi.
Minimum Night Stay Policy

There is a 3 Night Minimum Stay for all reservations from December 23 - January 2.

Family Plan
    • Children 17 and under stay free using existing bedding; total occupants including children cannot exceed the maximum occupancy of the confirmed room. Noncompliance with this policy can result in a supplemental per person fee an/or immediate cancellation of the right to occupy the unit.
    • Cribs are available free of charge (subject to availability).
    • Rollaway Beds are subject to availability and can be rented for $30 per night.
Additional Comfort
    • Parking is covered in the daily resort fee.
    • You may use Castle's Island Grocery Delivery Service to order your groceries & have them delivered to your room prior to arrival or during your stay. Visit Fee applies
Qualified Rates

To be eligible for a qualified rate (Military, Senior, Kamaaina, Government, AAA/CAA, Commercial, Airline employee, Owner Club, Travel Agent, etc.) guests must present a valid form of identification at check-in. If you are unable to provide sufficient identification, Castle Resorts & Hotels will provide you with the best available rate at the time of check-in.

Prepaid Non-Refundable Rate

Castle offers a pre-pay & non-refundable rate for selected properties at various times. To be eligible for this special rate, the full amount must be paid by the time of booking. All bookings are final and may only be altered by a qualified Castle Employee. Cancellation will result in a full stay charge.

Reservation Guarantee

Castle Resorts & Hotels cannot guarantee requests for specific units but will honor such requests when feasible based on availability at check-in. Castle Resorts & Hotels reserves the right to substitute alternate accommodations of a similar or superior room type. All reservations are subject to change or cancellation if rooms become unavailable for reasons including, but not limited to, natural disasters or other acts of nature, damage to the property or maintenance problems, strikes, owner usage, sale of unit, changes in applicable law, or failure of other guests to vacate as scheduled.

On Site Representation

Front desk hours: 24 hours a day, 7 days a week
Check-in: after 3 pm
Check-out: before 11 am

Pet Policy

Pets are not allowed in our guest rooms or resort area, with the exception of service animals. Noncompliance with this policy can result in a penalty fee and dismissal from the property.

Additional Terms & Conditions
    • Rates, restrictions, policies and all information are subject to change without notice.
    • Occupancy of the unit is subject to the house rules of The ISO, which are applicable to all guests.
    • Castle Resorts & Hotels reserves the right to terminate occupancy without a refund should violations of house rules occur.
    • No subleasing is allowed.
    • All offers are subject to program availability.
    • Rates are listed in US dollars except where noted otherwise.
    • All published rates are commissionable to travel agents at 10%.