I usually just sleep in the trailer.. Sweep it out and throw down some padding/all your bedding/whatever you do on the floor and you're good to go. That's what I do when I get stuck with the stock trailer, which has no living quarters. Otherwise I just take a tent along and that works pretty well. Just be sure to bring an appropriate amount of bedding, as the whole trailer is a big area, so it can get chilly. Oh, and if the weather is appropriate, I just sleep on a tarp with all the bedding necessary (always use wool around fires, as it only smolders and doesn't go up in flames).