We have a Forest River 2450 Sunseeker with corner, full size queen Serta pillowtop mattress and it is great. I don't use top sheet so only have to change bottom sheet and mattress cover for laundering then place comforter or throw on bed when I get up in the morning. Easy!
It has "multiple places to sleep". The very large dinette makes a really big bed and the cabover is a large bed. There is lots of good brands out there and Forest River is one of them.
Just keep searching and reading and asking questions on this forum and learn what to look for and against.