やよいの湯 (Yayoi no Yu)
Yayoi no Yu is an onsen in Beppu's entertainment district that is open 24 hours a day. You have to pay by putting two hundred yen coins into a box by the door. After paying the door opens automatically.
We had our doubts about this place because it is unmanned and located in the entertainment district, but it was cleaner and nicer than expected. There is one big bath that is divided into two parts. One part is hot and the other part is luke warm.
This onsen is open 24 hours a day
Changing area of the men's bath
Yayoi no Yu also has a foot bath, which costs 100 yen