if you look at camp Inn they have a design with a bunkbed in the raindrop design, good find with the trailer

I looked at Harbor Freight, but the axle just didn't do it for me. I bought a new Tractor supply trailer for about as much money as the Dexter axle costs by itself.
I have two tent trailers I got free for future builds, one has a Torflex axle and the other has a Dexter, both are much better.