Quote Originally Posted by clayne View Post
If there is a bathroom across the hall, you can use this. I've used a darkroom without running water for a while ...
Yes, it can be done. I have used a laundry separated from the kitchen by a door. Hardly inconvenient, but not ideal. Also, I am not one that prefers to be using darkroom chemistry in a food prep area.

Quote Originally Posted by clayne View Post
... but I won't lie to you - running water is MUCH more convenient and most of all: saves time. ... The drudgery of carrying water and trays back and forth tends to get to people after a while.
Running water and a drain are not necessary, but don't reach the level of luxury IMHO. In my experience, it's the same as the difference between an outdoor well and an outhouse, and proper indoor plumbing. You can get the, ahem, job done either way, but come on ...