I've been sleeping on a couch in my bedroom for many years, because of my fibromyalgia and arthritis. It's a nice big couch with seat cushions that go under the back cushions........so they don't come loose.
I have folded up a down comforter and then another comforter on top of that to sleep on top of. It's soooooo comfy. I think the smaller-than-a-bed area of it, keeps me from getting into positions that cause pain in the morning. When I was younger and camped through Europe, I loved sleeping on the hard ground. But no more! Good luck finding a bed that works for you. And welcome to the forum Oddball!