My darkroom is an unenclosed corner of my basement, away from the windows. I have it divided into a dry side where I have my enlargers on bench and a wet side which consists of a 6' darkroom sink. I have no running water, but I did arrange some plumbing so that the sink drains into a sump pump in a box which I bought at Home Depot. When the "box" fills up, the water is pumped over to the laundry sink on the other side of the basement.
I do my small prints (5x7, 8x10) in a three slot Nova processor. Anything larger, I use a print drum and a rotary base. For a water supply, I keep two one-gallon jugs of water at one end of the sink. Also, I keep an 11x14" print tray full of water to hold my finished prints until I am ready to carry them to the laundry sink on the other side of the basement.
I have covered the windows nearest to the corner where I work and, as long as I work strictly at night, the stray light from windows at the other end of the basement does not cause a problem. I do all of my film handling in a changing bag.