Sensual baths. They give me fresh ideas:
First I would partition off the wet area using treated bamboo tubes - real ones, spaced unevenly apart from one another. (Sort of like a peek-a-boo partition.)
Place a subtle ikebana arrangement on the vanity top. For pictures, use framed Hiroshige art prints.
Use chrysanthemum essential oil for fragrance.
Imagine the elegant and soothing Japanese ambiance you now have for the sanctuary you call bathroom.
Also, Tortoise in Venice, CA, whom you have featured before, sells hinoki tubs direct from a father daughter craftsman duo in Tokyo. Nice pieces!
The tubs look so cool, but they seem as if they would be uncomfortable to relax in, unlike, say, a clawfooted tub, and hard to get out of for an American of a certain age.