If I'm not mistaken the BCV and BWV living rooms are the same size, right? We managed a twin and a double Aero bed with the pull-out couch open in the BCV living room! My boys had friends down and no 15 year olds want to sleep in the same bed! You could barely walk when the couch was out and the Aeros were on the floor, but in the morning we would just stand them up against the walls. It was fine.
Plenty of room for the twin. We had five staying in the 1 bedroom in August. We put the twin bed in front of the door the leads to the balcony. With the sofa bed pulled out there was still plenty of room near the table and kitchen bar.