Some beautiful designs, to be sure... I guess my faves would be #1 and #5... I'm guessing the latter would be Bali or somewhere like that.

Actually, my favorite bathrooms are at The Inn at Langley on Whidbey Island Washington-- big jetted tubs overlooking a bay from front row; the showers and tubs are all part of one integrated room with slate walls.

This is not exactly "light" reading, but since you're interested in both design and psychology, have you ever read Christopher Alexander's "A Pattern Langauge?" It's a great background work on WHY we are attracted to certain designs, and the underlying psychology and "bones" behind why certain things seem to "work" naturally, and others don't.