This will take skill to get it done well. Consult with a professional designer.

See "Asian bath" or "Asian kitchen" in Houzz Photos. The pure Asian style should not look theme-y, like a Japanese restaurant.

sooz001 I agree. I don't want it to be over the top. I want it to blend in well.

Sorry this website is in Japanese http://www.kiso-artech.co.jp/products.html Just click on the left and you will see their kitchen themes and especially their flooring. These people have an English language catalog, they cost an arm and a leg, but everything is really stunningly beautiful. Their showroom is in the most well known walk in Kyoto.

Sounds like an interesting project! How about a round freestanding tub? We have a few that would look great! https://beta.qualitybath.com/listing/29/soaker-tubs/shape/round We also have a large selection of bamboo-themed products that would fit the theme! https://beta.qualitybath.com/search/bamboo. Hope this helps! Good luck!