12345Is it useful to complain about a hotel?

Useful.

12345 is the Chinese government service hotline, designed to provide a convenient complaint channel. Complain to the hotel through 12345, and the relevant government departments will receive and handle the complaint. Professionals will be dispatched to investigate and take corresponding measures against the hotel in accordance with relevant regulations. After investigation and confirmation that the complaint is true, the government will impose penalties on violations and provide feedback on the results.