What do you mean, don't disturb the hotel knocking?

Please don't disturb the hotel and knock on the door in order to ensure the safety of the guests and the cleanliness of the room. According to the relevant information asked, the person in charge of the hotel also explained the problem of hanging the Do Not Disturb sign. In order to ensure the safety of the guests in the room and ensure the hygiene of the room, the hotel cleaning staff will knock at 4 pm every day without intentionally disturbing the guests to rest.