My dogs love the bathroom!!!!
You'd think they would hate it because that's where B-A-T-H-S occur, but they don't.

Riley is always with me, and he naps on the rug when I take a bath. Our tub has a step up, and Kito sits there when I take a bath.
Jada loves to be in the bathroom, although I'll admit it's mostly because she can step up and see out the window and see what's going on out front.
Abbey comes in mostly out of curiosity, and usually turns around and leaves pretty quickly