Their foot steps sound like they just have 2 pegs for feet… they hit so hard.
And they frequently, almost daily, spend the entire evening stomping around the entire footprint of their apartment.
Are there people who really just get the top floor, and think “I’m so smart, and everyone else can get fucked” then proceed to make all the fucking noise in the world?
That sounds wildly unpleasant, unless they had some amazing soundproofing
The building they are in predates WWII, so definitely not.