My problem is solved because I moved out a long time ago. And no, I fear even my 4.A wouldn't have solved the problem, not with the walls actually shaking. Trying to talk to my neighbor didn't work either. One of them told me to call the cop if I wasn't happy. I did. The cops came and made them stop. Then all packages sent to me started to disappear (as delivery companies just left them in front of the door, where I lived, where an unscrupulous neighbor could easily pick them up).
Back to topic: the 4.A isolate great from street noise and the the such. But noise transmitted through the whole body can't be stopped that way. :ó(