Called a 'Murphy Bed' here in the U.S. (seen here:
http://www.flyingbeds.com/ ). Though somewhat expensive, they're very useful in providing a good quality bed as well as a lot of room when they're folded. Only thing we see as a downside, is that if they're "made up" (sheets and blankets installed) before folding for a long period of time, they smell a little stale... not bad, just not godd and fresh, especially in hotter summer months. we've learned to leave them bare . If one was using them on a daily basis it wouldn't matter.
Kinda expensive for good ones... as previously stated...