I used to use the kitchen.
Velcro around the window and patio door, black out material with velcrow one, lightproof in ten minutes. Constant water supply, warm, sink, plug hole. Sorted.
I then moved into the attic. Whilst it was dark at the flick of a switch, no running water was a pain it was cold in winter and boiling in summer.
Bathrooms make good places too as they usually have fans for ventilation, a bath to put the trays in, water, heat etc. sit on the lav, table in front of you with the enlarger.
Bathrooms usually have small windows to black out too making them fairly quick to turn into a darkroom.
BTW darkroom for prints don’t need to be that dark either, certainly not as dark as if you were processing film. Get a dark bag and one of those spirals and dev tank for that. When you think about the sensitivity of the materials, it makes sense, film a fraction of a second to expose, paper, 20 or 30 seconds?