Is it illegal for five people to live in a double room?

Legal analysis: four people living in a double room does not involve illegal activities, and there is no relevant law. Hotel accommodation is a civil contract, which is agreed by the parties and the hotel, and the hotel agrees.

Legal basis: Article 6 of the Measures for the Administration of Public Security in Hotel Industry stipulates that hotels must register when they receive passengers. At the time of registration, the passenger's identity documents shall be checked and truthfully registered according to the prescribed items. To receive accommodation from overseas tourists, an accommodation registration form shall also be submitted to the local public security organ within 24 hours.