Bigger is better, especially when talking about darkrooms.

I can't imagine working in a 8x12 darkroom, and probably even a 10x12. But that will all change when I go off to college...

My current darkroom is about 20'x30'. But that includes my work area (print mounting and framing) as well as a spacious layout, large wet side (about 6' x 20') and a horizontal 8x10 enlarger.