We just moved out of our apartments! I couldn't be happier. We had a complete nut job woman living above us. Cops always coming and going, DYFS, 2 am drunk fights complete with arrests, oh it was like something out of Jerry Springer. They were so noisy. And our complaints were not addressed by our slumlord. They'd wake my baby constently, and I worked nights, so often I'd get no sleep.
Then one AFTERNOON my son (now 4, but at the time was maybe 2) was in the kitchen which we usually keep gated, and slammed the pots and pans cabin open and shut, I'm not kidding, maybe 3 times, and our upstairs neighbor banged back! Well, I had finally had enough and I flew up there and completely out of character nearly physically hurt her. I had been tired of them disrupting our lives for 2 years, and the first time we make noise, she bangs back.
Needless to say, I should ahve handled it better, but sometimes emotions get the best of us.
What my neighbor didn't know, was all the personal stress I was dealing with, including my DS being diagnosed with autism.
The two years following, we barely taked, and seeing how the apartment complex did nothing to address noise complains, I was "lively" at 5am, when they were loud the night before. Civil? No. But I had tried for two years to go about it the right way, and only hit dead ends.
However, as the years went on, my autistic son became very loud, and still in. He has a lot fo very vocal tantrums, and went through about a year where he'd walk up in the middle of the night screaming, sometimes for like an hour.
As for the people across the hall, it turned out they had an autistic child too, and they were understanding of all the noise coming from our apartment.

He's under stress, having a small child, having to put up with his (hard definable at times) need, his wife's needs, his wfe's hormones, his job, his new apartment ... I'd loose it too, and, to be honest, as far as I know myself, Id write the exact same note. not meaning any harm, but just being pissed and wanting not to be talked to 

