객실을

객실을

"객실을" means "room" or "guest room" in Korean.

Here, '객실을' is used as the object of the verb '사용하려면' (to use), indicating the specific hotel room being referred to.

호텔에서 예약한 객실을 사용하려면 예약 확인을 제시해야 합니다.

To use the room booked at the hotel, you must present the reservation confirmation.

In this sentence, '객실을' is the direct object for the action described by '청소하는 동안' (while cleaning), referring to the room being cleaned.

객실을 청소하는 동안 잠시 로비에서 기다리세요.

While the room is being cleaned, please wait in the lobby for a moment.

Here, '객실을' acts as the object for '변경하고 싶다면' (if you want to change), signifying the room the speaker wants to change.

객실을 변경하고 싶다면 프런트 데스크에 문의하십시오.

If you want to change the room, please inquire at the front desk.