Seizansou is the name of the Mayaka Ibara's family inn. It appears for first time in Episode 7. Seizansou is situated in the Zaizen Village near the hot springs where the Classic club spend his holidays.
The inn is built with traditionals japanese materials and U-shaped. It is splited in 3 part: the main building where there are the reception, the refectory and the laundry and the two others buildings, where we can find the custormers bedrooms on the ground floor and the first floor. However, the first floor is unused since "the n°7 bedroom mystery". This floor is now used for storage.