Great idea RE the twin mattresses. I also love the tree pictures on the wall! Love to display kid-made art in a kids room! Two twin mattresses, some plywood, and a great playroom that doubles as a guest room or sleepover room.
I like the storage ideas here, and the antique benches. Just can't get over anyone using that for a playroom! Playroom, with a Danish farm table, French benches, and an Enzo Mari apple print from Danese Milano.