noun
Western-style room
A room with Western-style flooring (wood, carpet, etc.) and furnishings, as opposed to a traditional Japanese 和室 with tatami mats. Common in apartments, hotels, and houses.
このマンションは洋室と和室の両方があります。
This apartment has both a Western-style room and a Japanese-style room.
ホテルの洋室を予約しました。
I booked a Western-style room at the hotel.