If it were me, I'd go with a bunkhouse for the many reasons already stated, and then I'd build some sort of covered deck outside. I'm thinking a roof over a 8'x12' foot area, maybe just a back wall, maybe 3 walls with an open front. Couple of big rocking chairs with comfy cushions that could be stored inside... fire pit just outside the roof... Situate the structure so that you can just back the camper right up to it, maybe make use of an outside kitchen. I'd probably put a futon or couch in there and would end up sleeping outside most of the time!
