My downstairs neigbors are having very noisy sex.

[An Officer]

I've become desensitised to this. The only thing that surprises me is that my neighbours seem to have the inclination only between the hours of 2am and 6am. I salute them.

 

[jefferiestubes8]

It's a moot point – I only ever heard them that one night, and they just moved out last week, so the downstairs apartment is empty right now.

Have new neighbors moved in Dec.1 to this apartment? Do you have a similar noticeable issue with the thin walls?
Perhaps you can approach them nice and early with a housewarming gift of something homebaked and just mention how the building has thin walls and that will be a mental reminder to them that you've heard the neighbors in the past.

 

[Gepard]

Have new neighbors moved in Dec.1 to this apartment? Do you have a similar noticeable issue with the thin walls?

Yeah, some new folks moved in a few days ago. One of them seems to be a bass player, too, judging by the vibrations I felt through my feet last night.

The walls at my place are pretty thick, though; hearing other tenant's activities is the rare exception, not the rule around here, thus why it's noteworthy. The complex was built back in the '70s with renovations since, so it's got that "sturdy older construction" thing going for it.