Trigun

Episode 2
Vash the Stampede tries to Peep on Marianne while she is taking a Bath but then when he looked through the window and when Milly Thompson came to check on her, she wasn't even in the room and the Bathtub was left running as a distraction.

Episode 13
Vash the Stampede bathes Off Screen.

Episode 18
Vash the Stampede is given a Bath in a Washtub.