This rocks. We seriously considered getting one of these beds from IKEA for our RV, but we were not near one when we did our remodel. We ended up getting a twin captains bed and then adding a twin -L shape to the short part of the L. We ended up having a lot of drawer storage space underneath and a large cabinet area for bedding storage. It worked!
We take up all the spare bedrooms with office space, so I'd quite like to fit a murphy bed into one of them eventually so that our guests aren't stuck on the couch. (Though one office has a couch as well...) (10 Murphy Beds at Brit.co)