Lake Union Hot Tub Boats Seattle is located at 2520 Westlake Ave N. Our facility is one of our pride and joys with a hand-crafted floating hut tucked into an old boathouse. Local muralists have adorned the walls with their paintings and staff maintain the many plants throughout the space. We have a changing room, restroom, storage lockers, and Seattle’s best shower to make the experience. Carefully crafted with playful elegance, the Hot Tub Boats are innovative and charming inventions. Every aspect of this boat was designed and built in Seattle with intention, from the sleek teak decking to the easy-to-use joystick navigation and onboard heating system.