Thanks Joei. I had talked with the tenant before, and I actually ran in to him the day after the super paid me a visit. I did apologize, and suggested some things I might do to mitigate the problem. The tenant does seem to be a nervous type to begin with
(not that that excuses the noise) but the conversation was better. I am not going to switch rooms, as my room is on the street side and noisier, and also attaches to the apartment next to mine. My little guy was quieter this weekend, and I took his toys and put them in my room so that should help. I looked up the Fair Housing Act, and it doesn't appear that they would be able to do much; it just burns me because the super's kid has made all kinds of racket zipping around on his motorized scooter in the parking lot, or playing with his remote controlled cars when my son was trying to take a nap!