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Grand Harbor Resort

3.5 star property
Families enjoy thrilling water slides at this resort, with American dining and two spa tubs for relaxation after waterpark adventures.

Choose dates to view prices

Grand Harbor Resort and Waterpark offers family fun with free continental breakfast and waterpark access. Enjoy American dishes at Tony Romas, relax in spa tubs, or float in the lazy river pool. Attentive staff provides express check-out and laundry services to enhance your stay.

Reviews

8.0 out of 10
Very good

Popular amenities

  • Pool
  • Hot tub
  • Breakfast included
  • Free WiFi
The current price is ￥22,779
￥25,512 total
includes taxes & fees
Jun 4 - Jun 5
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About this property

Grand Harbor Resort

  • Family-friendly hotel near Diamond Jo Casino
  • Located close to National Mississippi River Museum and Aquarium, Grand Harbor Resort and Waterpark provides free continental breakfast, free water park access, and an arcade/game room. For some rest and relaxation, visit the 2 hot tubs. The on-site American cuisine restaurant, Tony Romas, offers lunch and dinner. In addition to a bar and a gym, guests can connect to free in-room WiFi.
  • Additional perks include:
    • An indoor pool and a children's pool, along with a lazy river, a waterslide, and a lifeguard on site
    • Free self parking
    • Express check-out, a children's club (surcharge), and a vending machine
    • A gift shop, laundry services, and smoke-free premises
    • Guest reviews speak highly of the helpful staff
  • Room features
  • All 193 rooms offer comforts such as air conditioning, in addition to thoughtful touches like free WiFi and safes. Guest reviews give good marks for the clean rooms at the property.
  • More amenities include:
    • Rollaway/extra beds (surcharge) and cribs/infant beds (surcharge)
    • Shower/tub combinations and hair dryers
    • 32-inch flat-screen TVs with cable channels
    • Refrigerators, microwaves, and coffee/tea makers

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Policies

Check-in

Check-in start time: 4:00 PM; Check-in end time: midnight
Minimum check-in age: 21

Check-out

Check-out before 11:00 AM
Express check-out available

Special check-in instructions

Front desk staff will greet guests on arrival at the property
For any questions, please contact the property using the information on the booking confirmation
Information provided by the property may be translated using automated translation tools

Renovations and closures

The following facilities are closed on Monday, Tuesday, and Wednesday:
  • Children's pool
  • Indoor pool
  • Hot tub

Access methods

Staffed front desk

Pets

Pets not allowed

Children and extra beds

Children are welcome
Rollaway/extra beds are available for USD 10.0 per day
Cribs (infant beds) are available for USD 5.0 per day

Property payment types

Important information

Fees

You'll be asked to pay the following charges at the property. Fees may include applicable taxes:

  • Deposit: USD 50.00 per stay

We have included all charges provided to us by the property.

Optional extras

  • Crib (infant bed) fee: USD 5.0 per day
  • Rollaway bed fee: USD 10.0 per day

The above list may not be comprehensive. Fees and deposits may not include tax and are subject to change.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
This property accepts credit cards; cash is not accepted
Safety features at this property include a fire extinguisher

We should mention

The property has connecting/adjoining rooms, which are subject to availability and can be requested by contacting the property using the number on the booking confirmation
A car is not required for transportation to and from this property

Frequently asked questions

Does Grand Harbor Resort and Waterpark have a pool?

Yes, this property has an indoor pool and a children's pool.

How much does it cost to stay at Grand Harbor Resort?

As of May 24, 2026, prices found for a 1-night stay for 2 adults at Grand Harbor Resort on Jun 4, 2026 start from ￥22,779, excluding taxes and fees. This price is based on the lowest nightly price found in the last 24 hours for stays in the next 30 days. Prices are subject to change. Choose your dates for more accurate prices.

Is Grand Harbor Resort and Waterpark pet-friendly?

No, pets are not allowed at this property.

How much is parking?

Self parking is free at this property.

What time is check-in at Grand Harbor Resort and Waterpark?

Check-in start time: 4:00 PM; Check-in end time: midnight.

What time is check-out at Grand Harbor Resort and Waterpark?

Check-out is at 11:00 AM.

Where is Grand Harbor Resort and Waterpark located?

This family-friendly Dubuque hotel is located on a river, within a 10-minute walk of Diamond Jo Casino and National Mississippi River Museum and Aquarium.

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Reviews

Reviews

8.0

Very Good

8.0

Cleanliness

7.8

Amenities

8.6

Staff & service

7.4

Property conditions & facilities
Rating 10 - Excellent. 504 out of 1156 reviews
Rating 8 - Good. 302 out of 1156 reviews
Rating 6 - Okay. 216 out of 1156 reviews
Rating 4 - Poor. 77 out of 1156 reviews
Rating 2 - Terrible. 57 out of 1156 reviews

Reviews

Verified

10/10 Excellent

Michelle

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Bar was well priced and room came with complimentary breakfast.
Stayed 2 nights in Apr 2026
Verified

10/10 Excellent

Alexis

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Clean room, great price, lots of family fun.
Stayed 1 night in Mar 2026
Verified

10/10 Excellent

Kellie

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The staff were nice and the food was good and the kids enjoyed the arcade and pool and slides.
Stayed 1 night in Mar 2026
Verified

10/10 Excellent

Jacquelyn

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great stay. Kids loved the water park. Breakfast was a bit meh and no coffee. Staff was super friendly and helpful. Facilities/room were clean. We'll be back!
Stayed 1 night in Apr 2026
Verified

10/10 Excellent

Craig

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The staff was very friendly and even if not directly helping were if we had questions or even just offering towels or extras. Lifeguards were very understanding of my special needs child and willing to engage everyone even if it was busy
Stayed 2 nights in Apr 2026
Verified

8/10 Good

Amy

Room was clean with a nice view and breakfast was excellent! Thank you!
Stayed 1 night in Mar 2026
Verified

10/10 Excellent

Nicholas

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Housekeeping and staff super excellent
Stayed 1 night in Mar 2026
Verified

10/10 Excellent

Deb

Liked: Cleanliness, amenities, property conditions & facilities
Room was very clean, staff very friendly, waterpark was fun and not run down as ive seen in other reviews. Food and stay was very reasonably priced and a good variety of choices at the continental breakfast.
Stayed 1 night in Feb 2026
Verified

10/10 Excellent

Gina

Liked: Cleanliness, amenities, property conditions & facilities
Room was clean, all the staff was super nice
Stayed 1 night in Feb 2026
Verified

10/10 Excellent

Randy

Liked: Cleanliness, amenities, property conditions & facilities
Price was great for a nice clean room and staff was exceptionally nice
Stayed 1 night in Jan 2026
Verified

8/10 Good

Susana

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Clean. Staff very nice. They have to offer more fruit and pancakes for breakfast.
Stayed 2 nights in Mar 2026
Verified

10/10 Excellent

Tayler

Liked: Cleanliness, amenities, property conditions & facilities
Friendly, relaxed staff and so much family fun at the waterpark.
Stayed 4 nights in Jan 2026
Verified

6/10 Okay

Susan

Liked: Staff & service
The restaurants were excellent. We did not use the gym.
Stayed 4 nights in Mar 2026
Verified

10/10 Excellent

Marta

Liked: Cleanliness, staff & service, amenities
We had a great stay. People were nice, room was clean, breakfast was very good. We will go back
Stayed 1 night in Feb 2026
Verified

10/10 Excellent

Elliot

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Fun stay, helpful staff
Stayed 1 night in Jan 2026
Verified

8/10 Good

Ashley

Liked: Cleanliness, staff & service, property conditions & facilities
The hotel is a little outdated but still clean and comfortable. Every staff member we encountered was amazing! Friendly, helpful and very accommodating. The arcade needs some work with half the games out but the pool and all its features were awesome and they had a cool kids zone full of activities. Overall it was a great stay and we would definitely go again!
Stayed 3 nights in Mar 2026
Verified

8/10 Good

SOPHIA

Liked: Staff & service, amenities
Loved our visit, pool floor has been resurfaced and feels nicer. Lifeguards are well staffed and actually use their wissles. Breakfast seating is always an issue but delicious, we ate in our room. Some stains/ wall wiping could be done but overall bug and debris free room. We will be back some day, keep up the good work!
Stayed 1 night in Apr 2026
Verified

8/10 Good

Brent

Liked: Cleanliness, staff & service, amenities
Room clean and staff courteous.
Stayed 1 night in Jan 2026
Verified

8/10 Good

Kara

Liked: Amenities
Water park was great for the kids
Stayed 3 nights in Dec 2025
Verified

10/10 Excellent

Nicole

Liked: Cleanliness, property conditions & facilities
Check in was very easy and the staff was very helpful
Stayed 1 night in Jan 2026
Verified

8/10 Good

Robin

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Kids had a great time!
Stayed 1 night in Jan 2026
Verified

8/10 Good

Robin

Liked: Cleanliness, staff & service
Kids had a great time!
Stayed 1 night in Jan 2026
Verified

10/10 Excellent

Rhonda

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
This was a middle point to meet family members. We had all ages and the pool was wonderful for all ages. The rooms were clean and comfortable. This will become a family meeting point for us in the future. Kids loved it.
Stayed 2 nights in Feb 2026
Verified

8/10 Good

Jessica

Liked: Cleanliness, amenities, property conditions & facilities
Great view of Mississippi River from our room. Room was clean. Lots of towels in the pool area. Decent breakfast.
Stayed 1 night in Feb 2026
Verified

10/10 Excellent

David

Liked: Cleanliness, amenities, property conditions & facilities
Clean room and friendly staff
Stayed 1 night in Jan 2026