murphy bed over couch.

[loaderman]

Great space saving idea, could leave it down most of the time and just put it up for those rain times when you need/want room inside.
Gives you a real bed to sleep on.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/23798850/print/true.cfm

That one comes down over a 'jacknife' sofa/bed.
Many come over a sofa where you remove the back cushions, easier to do homemade.
https://www.google.ca/search?hl=en&q=murphy+bed+over+sofa&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&biw=1264&bih=726&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=AMsRUJyyFaTciQKz94HQBg