DD1 (13) has the spare queen bed so whenever someone comes to stay she gets shunted to the king single in DD2's room. When also have a queen air mattress and a 4x4 self inflating queen and single mattress that can all fit in the lounge room or on the bedroom floor if need be. If the two girls end up sharing a room down the track we will get the bunk with queen/double bed on the bottom to save space.