You can see pictures and details of Otis's Montessori Nursery here. Now Caspar and Otis are in the same bedroom, the room is still Montessori but it's much more modern.
The bedroom is for sleeping, reading and quiet time. Occasionally the boys will bring in toys but with the exception of toys stored in the wardrobe and their bears, there aren't any toys kept in here.
Two beds, low front facing bookshelf, book baskets by the bed, clothes within easy reach and low artwork. It's intentionally simple.