I agree with Ace. As a LL I am much more inclined to do what I can for a good tenant over a bad one. However I recognize that a tenant who always pays on time does until they don't. And then I start the legal process just the same.
As for the OP's problem. This should be handled by the LL. Confronting other tenants can lead to long term problems. Offhand I'd say the LL fell down on his screening process.
Anyone who is considerate of others would recognize their noise would bother people. If I was moving into a new unit and was going to pound nails for pictures or move a wall... I would go around to the other neighbors, introduce myself, let them know what was up, and how quick I would be done.
Unfortunately many people just don't have manners these days.