Since I set my bathroom up a few weeks ago and I'm very excited about it I'll add my two cents.
For film development I have a changing bag to load film into my small tank. I only do 35mm and 120 so it works for me. I develop film in my kitchen being very careful about spillage and cleanup.
For printing, I live in a small studio apartment but am blessed with a decent sized bathroom. I move my coffee table, a nice long, light and narrow wood table, into the bathroom. I put my enlarger (a LPL/Saunders C6600 so it's a nice size for my space), timer and paper on the table, put my trays in the bathtub and the safelight goes as far away from my table as possible. It takes me about 10 minutes to setup/takedown. It works fairly well, I have a decent separation of wet and dry. I can sit at the table and lean over, which isn't the most comfortable but it works. For washing I carefully take the print into the kitchen and use the steel sinks.
I get a kick out of people asking "You made that in your bathroom?" when they see a print. And because I have limited storage the enlarger sits out on a table with some of the bits and pieces. Makes for a great, very useful conversation piece for visitors and is a useful reminder to me that there's always a print to be made.