Our truck seats five people so why not sleep all five? We are going on a short trip with some of my adult children. We are going to some cold high altitude places so I made room for all to be in the heated camper at night. Warmer trips we all sleep outside.
There is a wood cover for the sink, not shown. We only use the air mattress for the plywood bed. The regular bed has 1 1/2 inch memory foam on top of XP bed.
I screwed a strip of aluminum to the edge of the ply to rest on the counter then covered all that comes into contact with the camper with cloth so as not to wear on the camper.
The fifth person sleeps on the converted dining table as normal. A sixth person could sleep on the floor as long as we all don't have beans for dinner.