This is the most disgusting and interesting thing that I've ever seen. Taiwan's business competition culture extending to the highest point. Using toilets and baths to create the lay out of restaurant even us 'poo poo' as deserts!! There are the links that you can have a look what's looks like.
http://www.wretch.cc/blog/mrssmith/20600619 this is from my friend Anita's blog (In Chinese but she got some really 'nice' photos for you to see!!
http://www.moderntoilet.com.tw/en/store.asp there are the restaurants (In English)