If your neighbor is noisy, especially at night, here is a simple template you can use to write a complaint letter to your neighbor about noise.
I come each day tired from work so I would want to go straight to bed. Hence, I don’t appreciate how you always have your radio’s music up. I would really appreciate it if you turn it down. Better yet, use your earphones so you don’t disturb anybody. After all, there are a lot of ways for your neighbors to not hear your loud music.
As a neighbor, I am also concerned about what your other neighbors would think about your behavior. I’m sure I’m not the only one who is getting bothered by the noise late at night.
Here’s hoping you do something about this problem. I would want to get my beauty sleep so I will have energy for the next day at work.