The floating house I rented was off to itself in a cove some distance away from any marina, anchored more or less permanently in place with an attached floating dock for the boat you use to get back and forth. The marina has a specialized boat with a crew that comes out, pumps the gray and black tanks, fills the freshwater tank, fills the propane tank, checks the anchors and adjusts them if the water level has fluctuated (and it does, sometimes majorly, in Tennessee Valley Authority lakes). Some of the floating houses had rainwater catchment systems or water filtration and purification systems using lake water. They all had solar panels. It’d get old having to be in the weather for a half hour every time you wanted to go anywhere or just to go get groceries, I’d think. But, for a week it was very pleasant.