Near Grand Harbor Resort and Waterpark With a stay at Grand Harbor Resort and Waterpark, you'll be centrally located in Dubuque, within a 10-minute walk of Diamond Jo Casino and National Mississippi River Museum and Aquarium. This family-friendly hotel is 0.1 mi (0.1 km) from Mississippi River and 0.1 mi (0.1 km) from Mississippi Riverwalk. Make yourself at home in one of the 193 air-conditioned rooms featuring refrigerators and microwaves. 32-inch flat-screen televisions with cable programming provide entertainment, while complimentary wireless internet access keeps you connected. Bathrooms have shower/tub combinations and hair dryers. Conveniences include safes and desks, as well as phones with free local calls. Enjoy American cuisine at Tony Romas, a restaurant which features a bar/lounge, or stay in and take advantage of the room service (during limited hours). A complimentary continental breakfast is served on weekdays from 6:30 AM to 9:00 AM.