We had a roll-away one trip because one DS got sick so we didn't want them sharing a bed. Yes, it was cramped a bit, but we didn't leave it up all the time. We moved the table and put it against the wall by the tv. Of course, this was before the renovation, so I'm not sure the room layout was exactly the same.
Anywho, this past summer we brought our own aero bed and that worked awesome. We just leaned it up against the wall during the day so it was out of the way. This way we didn't have to pay for the roll-away but the boys got to have their own beds. If you have access to one of those, I'd suggest that instead.