Noisy neighbors are pretty much the worst. But perhaps the worst of the worst is neighbors who have loud and unrelenting sex, night after night. If it was just a one-off it might be amusing, but when it keeps happening it's time to do something about it.
No, not move house. But leave a passive-aggressive note. That way you get to shame them in front of the whole apartment block when you leave the note attached to their door.
Or, of course, you could be more inventive in your note-leaving.
For instance, you could rename your wifi to something indicating your can hear your fellow apartment dwellers having sex. Or, if you really wanted to be forward, you could buy your neighbors a ball gag to quell the moaning.
Either way, beware of upsetting those who live in your block when making the beast with two backs. Or you might come home to find one of these notes attached to your door.