Aloha book66,
Having run residence halls for a number of years, some creative solutions come to mind - none of which I will mention

Noisy floors are something - especially when those walking on them, walk "heavy" when upset without realizing they're doing it.
Place on your relationship activation card what you want you relationship to be like with the neightbors (not what you don't want), and put something on your success direction card in regards to the best living space for you.
The folks down stairs are doing the best they can to get their needs met. Send them love and look for opportunities for kindness that present themselves.
Tubes of light for your apartment and the building complex as a whole each morning and evening is a good opportunity to "up" the vibration of the space.
Much Love, Shawn