Finally I could have a decent record about my downstairs neighbors ! I never saw them but every weekend it's sex time and she is very vocal, I can hear her from my appartment like she's in the same room as me.
I use my phone to record, blocked between the door from the floor and the stairs, everyone in her floor can hear her so easily
So here the records from yesterday and today.
As for yesterday you can have more moaning starting 1.15 minutes
As for this afternoon it's start very quickly.
As for this evening I mixed the 2 records from the evening as I was a little late when i start to hear them.
Don't hesitate to give me some tips