Hotel staff generally have a legal right to enter your room under specific, limited circumstances, but they cannot simply "break in" for no reason. Legitimate reasons for entry include housekeeping services, necessary maintenance/repairs, or emergencies such as a fire or a suspected medical crisis. Additionally, if the management has a reasonable suspicion of illegal activity or a violation of hotel policies (like smoking or excessive noise), they may enter to investigate. Many hotels now have "wellness check" policies where staff may enter if a "Do Not Disturb" sign has been displayed for more than 24–48 hours to ensure the guest's safety. While you have a "reasonable expectation of privacy" while the door is locked, this is not absolute. To protect your privacy, always use the deadbolt or security latch when inside, and use the "Do Not Disturb" hanger when you want to be left alone. If a staff member enters without a valid reason or without knocking, it should be reported to management immediately.