Welcome to Marko56. Just my opinion you don’t have to follow it. Used RVs are full of troubles that somebody else wanted to get rid of. New RVs are out of this world in price. That’s why I and many around here build our own simple units in some type of vehicle like a van, step van, Utility trailer etc. potty chair and water fed by gravity in a jug may not be convenient but I find it a lot better than servicing the RV, managing the black and gray and fresh water tanks and worrying about leaks in the roof. Besides my gas mileage is much better than any RV I’ve seen. This is a good example of what happens on this forum you’ll get opinions from lots of different people but you’ve got to make your own decision and live with it. I hope you find what you’re looking for.