3. I'll start with the internal sounds:a) person in next room showeringb) person in next room's cell phone going off repeatedly with nobody answeringc) person in next room zipping their luggaged) person in next room BRUSHING THEIR TEETH (they did a good job - about 2 minutes of vigorous brushing was audible)e) every door on the floor slamming (This also caused my king sized bed to shake)f) what i ended up deciding was pipes passing water from flushed toilets above me - the first two nights i thought it was airplanes passing over head irregularly every few minutes (i think that was also happening)g) train with a crossing it honks for right across the parking lot - this one was probably the least annoying, i leave near a train anyhow and i'm used to this.