Quoted By:
The shower makes the difference between 'portable house' and 'glorified tent'. They need standing headroom, tanks, pumps, heaters, valves, doors, and everything. Making that fit in a regular van or sub-35' sailboat is a trick but if you do the sponge-bath thing you might as well be camping.
For van-dwelling, consider leveling jacks. Even if the ground is level having it bouncing around when you masturbate (or do anything else) is a pain. Having your wardrobe next to your (chemical) toilet is not going to fly. The stench just soaks in.
