I would've loved a place like this to read! I suppose the shelf would need to be built in or at least anchored well to the wall and probably be actual funiture(not ikea or target assemble yourself shelving)
CustomMade by Gary Owens: This is much more than just a bunk bed. It's a whole room full of furniture in a bunk bed. It has a closet, dresser, bookshelf's and a stairway with drawers under each stair tread. It can be built out of different species of wood and in a variety of finishes. Everything can be reconfigured to fit you needs.