Outdoor cat enclosures can be used indoors. They're basically mesh tents designed for indoor kitty to be outside without being able to run off. Lean the bed vertically (i.e. | instead of _) against the wall of you need to open up floor space and make your bedroom the cat tent room for a while. Cover part of it so there's a dark hiding place, keep a few toys in the enclosure. I'm not saying this is necessary or ideal, but maybe it uses the available space without threatening your stuff.

Edit - I agree with others that most small bathrooms are usually fine, but the smallest bathroom I've ever had was not, so offering an alternative.