Free up other bedrooms in your house with some creative furniture placing like this. Add curtains to draw across for privacy. Brilliant!
My dad worked for CNR (canadian national railway) and this reminds me of the berths I slept on in the sleeping cars...at least your kids wouldn't be sleeping near strangers like I did. I had another friend in Vancouver BC that shared a pretty big bedroom with 3 other sisters. Their dad had a big X shaped wall (s) built in the middle of the room and each girl had their own section. You could walk around the entire thing to get to each other's space. I remember thinking how cool that was. It was like they each had their own little bedroom.
Photo from Southern Living.