A guest room in a hotel or a passenger cabin on a ship or plane; a room intended for guests or passengers.
ホテルの客室は海が見える部屋にしてもらった。
I had the hotel put me in a guest room with a sea view.
客室の設備は新しく、バスルームも広かった。
The guest room's facilities were new, and the bathroom was spacious.
飛行機の客室に荷物を置けるスペースが少なかった。
There was little space to store luggage in the airplane cabin.
A drawing room or reception room used for guests; a formal room for entertaining visitors.
祖母の家の客室には古い家具が並んでいた。
Grandmother's drawing room was lined with antique furniture.
客が来たので客室でお茶を出した。
Guests arrived, so we served tea in the reception room.