Bed couch with draws, shared room, space saver. this could go in bedroom area. like the shelves idea, too. can add a light wooden dining table and a few comfy folding chairs to make cool dining area in bedrm space, if bed moves to living room area.
Pallet Bed for the girls. I like this, especially for a temporary spare bedroom in my craft room solution. I think I would actually hang the painted pallets vertically in my craft room when no guests are here and use the pallets like a giant Idea board.