It is square and about four feet across. I bathe next to the tub on the tile area, where I sit on the short plastic stool, as I did at the ryokan . Again this room has no heat or cooling. I am not looking forward to winter showers. When the bathroom is not in use, I leave the window open to keep it as dry as possible.
Japan is hot and humid and makes a perfect breeding ground for fast-growing mold.
Fortunately, exposure to direct sunlight kills it.