I am a guest at a hotel and cannot sleep because of the noise coming from next room. I would like some quiet.

Immediately contact the front desk to have the noise situation checked and remedied. Depending on the situation, you may also want to discuss the possibility of changing rooms. If you put up with the noise and cannot sleep, and then file a complaint the next day, the hotel will not be able to confirm the situation at that time, making it difficult to suggest a remedy. It is important to file a complaint then and there when the noise is audible.