Having a comfortable, luxurious bathroom is a goal many homeowners have. Remodeling a guest or master bathroom is a chance to create a space that is unique to your style and needs. A popular design theme that many find peaceful is that reflecting a Japanese style. A key feature to Japanese bathroom design and style is the bathtub. Japanese soaking tubs are unique in that they are small and deep, and typically include a seat to allow the bather to relax in a seated position.