i feel you on the space issue... i live on the second floor and have a 2 year old daughter.
i have me and my wife's beach cruiser on our patio which is 164 Square Feet. and a patio closet with rims and 3 bike frames.
and im currently working on my schwinn so its like i turn around and there are parts everywhere...
i keep my 3 speed against my counter, but its pretty nice my wife actually likes me keeping my 3 speed in the house. she things its a nice bike, and my daughter doesn't bother it so it is fine for now...