My sister & brother-in-law used to get a tent camping site but they would sleep in the 22' power boat.
Certainly doable but inconvenient as they needed a ladder to get in and out and there were no stabilizers on the trailer so it bounced around a lot.
You could get a pontoon boat or small houseboat and it would be a little better but still some hassles...example: RV's typically drain the holding tank by gravity. Boats usually have pump out fitting on deck but you need a suction system to empty it. Bigger question is where do you plan to use the boat? pontoon/house boats are not good for open water where you get any decent wave action.
