Enclosed trailer to be camping trailer?

They make really nice hunting trailers. Not only do they serve as sleeping quarters, but you can also use it to haul and/or dress your catch. Since people normally waterproof the floors, they hose out really easily. Anyway, I've seen lots of trailers similar to what you're thinking. Here's a link to a guy who had a similar idea as you. His trailer was beautifully done. Wait until you see the end product.

Trailer Build