thank you!

The funny thing, that i'm the landlord of this apartment. I bought it recently from my friend, and the second funny thing is that at first they didn't understood about what sounds i'm talking about - and i believe them, i guess they were so used to it.
For example my girlfriend doesnt pay attention to it, for me as a quite sensitive person it's sometimes annoying.

so i'm trying to do these things:

1) i noticed that the warranty for building is not expired - so trying to contact the company who built this home to see they if would have something about this situation.
2) will try to contact again the elevator company maybe they will be able to try do some adjustment of the brake or to install the better one when this will wear off ?
3) will give myself 1 year or more to try to get used to it. Because i really like the place where apartment is and everything else is very good here.

Soundproofing options - it's bad that we don't know the outcome of the effort would be. I understand that this is a 'structurical' sound, not airborne - so soundproofing might not work. Also the wall towards elevator shaft is kitchen wall where some closets are hung on the wall so i guess, this makes soundproofing things even harder.

Also - I just dont understand why some elevators for example in my office doesnt spread any sound of breaks at all. It's because they're not MRLs ?