When a housekeeping staff member knocks and announces "Housekeeping," the proper etiquette is to respond clearly and immediately to prevent them from entering. If you are decent and ready for service, a simple "Come in!" or "Just a moment!" is sufficient. If you do not want to be disturbed or are not ready, you should say "Not right now, thank you," or "Could you come back in an hour?" If you are in the bathroom or unable to speak loudly, many modern 2026 hotels have "Do Not Disturb" buttons that light up a signal outside; if you forgot to press it, a quick, loud "Occupied!" will stop the entry. Professional housekeeping protocols usually involve three knocks and three announcements before they use a master key, so a timely verbal response is the best way to maintain your privacy and help the staff manage their cleaning schedule efficiently.