The thing everyone gets wrong about quiet hours is the hallway, not your walls
I moved into a corner unit in Austin 8 months ago and kept getting noise complaints even though I'm a pretty quiet guy. Turned out my neighbor's TV sounded loud in MY bedroom not because the walls are thin but because sound was bouncing down the shared hallway and sneaking under my door. I got a $20 door sweep and a roll of foam weatherstrip from the hardware place, spent 15 minutes installing both, and the noise cut in half overnight. If your landlord won't fix anything, measure the gap under your door with a piece of paper first and see how far it slides through. Has anyone else noticed hallway noise is way worse than wall noise in their building?
Oh man, this is such a real thing and it goes way past noise. I feel like half the problems in apartments come down to stuff nobody thinks to check because it's not the obvious spot. The gap under your door, the drain in the bathroom that lets smells up, the one outlet that's not sealed so you get a draft in winter. It's always these tiny dumb openings that ruin everything, and the fix costs like 20 bucks and takes 15 minutes. Landlords never look at the cheap stuff first. They just tell you the building is old and shrug.