I just met my neighbours in the courtyard, and they seemed to be in a rush, now I get why. Not even 3 mins after we both went inside, I heard them from the other side.
They gradually get into it, don't worry if you can't hear anything in the beginning.
They kept me up at night, this was at 2:30AM.
Enjoy!
I heard them in the corridor, and they were all giggly, this happened like ten minutes after that. They lasted around 10 minutes.
Be careful for the loud noise at ~2:25