Lots of pictures of great ideas for space saving beds, including murphy beds "Here’s another quick alternative, featuring a concertina design, which you can hide into other pieces of furniture like wall units.
Ok, so I know this is a bedroom but it's a great use of space for a small room. I particularly like the use of the dead space behind the ladder for shelving. It could also be a cool idea for a kids play room.
Notice the closet UNDER the loft bed-- for a kid, it's a great solution. (Jay Austin’s Matchbox house is only eight feet wide but feels bigger, thanks to a well-organized interior. A skylight over the lofted bed
Loft bed from the Swedish company Compact-living. The concept is particularly great for a small or tiny house because it eliminates walls below. While the ladder doesn't look super fun to use the lighting and bed solution is innovative and fun.