I have one of these in my apartmentL
http://www.ikeahackers.net/2008/02/s...bike-rack.html
It holds two but you can easily attach other parts to it to make it hold a single bike + storage or just use it to float a single bike out of the way.
You could even combine the hack that mounts a TV on the same posts and hang the bike above your TV.
I had one of these up in my old apartment for a single bike:
http://www.amazon.com/Delta-Leonardo...uct/B000FGTTEW
It works fine (I didn't have the rear tire plate) but depending on the space, it can be hard to find a place where that style of mounting makes sense. It sticks out quite a bit from the wall when you hang it that way so if it isn't in a corner or next to something else that takes up space, you will loose a lot of area.
Finally, if you wanna go baller, have someone build up something like this:
I've considered making one but I need storage for multiple bikes so it is less practical (and since you want to get at the bookshelf, it isn't really much better than just leaning it against the wall).
