My mom just got her own house and wants my DDs to spend more nights there. Problem is that they are sleeping in their playroom so space is limited and they spend the night together. The room has hardwood floors so a sleeping bag on the floor does not work. Last time my mom used her air mattress for them but the cat 'kneaded' it while the girls were sleeping so the mattress now has holes. Any ideas for a removable type bed? The girls are only 6 and 4 so not terribly picky yet.