Are you talking about the "Japanese style room" where Japanese people live? Housing in Japan is divided into "Japanese-style rooms" and "Western-style rooms." The so-called "Japanese-style room" is a purely Japanese-style room with tatami mats, a small dining table, a kotatsu, etc.... But the "Western-style room" imitates the Western style, with a bed in the room. Sofas, fireplaces, etc. Most of the apartments where Japanese people live today are already Western-style houses. But some Japanese people, such as the elderly, are still not used to it, so one room in the apartment must be a Japanese-style room, that is, a Japanese-style room.