What time do the police usually go to the hotel to check rooms?

There are no specific regulations on this. It is generally considered to meet the legal conditions. In accordance with legal procedures, the public security organs can conduct inspections at any time.

There are three main situations in which public security organs conduct rounds on hotel rooms: routine inspections, accepting reports from citizens, and inspections during special periods.

PS: Article 87 of the "Public Security Management Punishment Law": Public security organs may inspect places, objects, and persons related to violations of public security management. During the inspection, the number of people's policemen shall not be less than two, and they shall present their work certificates and inspection certification documents issued by the public security organs of the people's governments at or above the county level. If it is really necessary to conduct an immediate inspection, the people's police can conduct an on-the-spot inspection upon presenting their work ID. However, when inspecting a citizen's residence, they must present an inspection certification document issued by the public security agency of the people's government at or above the county level.