Not a damn thing, I built my house and the most important part of the house was the DR. But that does not mean I have not suffered for my art...
Let me tell you how I started. While going to college I had a very and I mean very small 1 bedroom, which basically was a living room/dinning room, kitchen and bedroom with bath. In the bedroom I had a mattress on a wooden platform I had made. So, to develop pictures, I would prop the mattress against the wall, cover the windows with the bet spread, assembled the enlarger, put the trays on the wooden platform and away I went. After I would wash everything, disassembled the enlarger, put the mattress back on the platform.
Of course, may a times it was easier to just go sleep on the couch than pick everything up.