This article explores the concept of wet rooms in Japan and the advantages and disadvantages of them. Wet rooms have no physical barriers between the shower area and the rest of the room, making them more efficient with space, easier to clean and offering advanced technology such as heated floors, steam baths, rain showers and aromatherapy scents. There are two main types of Japanese wet rooms: public baths (sento) and private homes (onsen). However, these amenities come at an increased cost both financially and maintenance wise.