Got an update remodel delima?

Hi. its an 11 year old r.v. with the orignal fold down sofa to make it a bed. fabric has had it. dare i save the metal frame and reupholster it. or get rid of it and build a platform to hold a twin size mattress upholster it make and by pillows for the back and side rest or attempt to find a sofa bed which would be a queen size fold out. the orignal idea of sleeping in this huge place is 3 people going with a queen sleeper would make it a 4 sleeper. no body ever stays overnight in it other than myself. just short of drawing straws for a choice i am sorta stumped. it is a makenzie medallion 5th wheel 34 or 36 foot long i cant seem to remember that either. feel free to advise. thank you.