I use the broomstick method with my upstairs condo neighbors, and it works very well. One night they were very noisy, so I tapped on the ceiling to let them know it bothered me. The next day, I saw one of them in the parking lot. I explained to her that I didn’t mean to be nasty with the tapping, but it was too cold to come out and knock on her door to ask her to be quiet.
She apologized for being noisy, and said it wouldn’t happen again. (They had a puppy and they were throwing a ball for it. The trouncing back and forth is what made the noise.) I told her what hours we keep, and that I enjoy hearing the puppy running most of the time because I could imagine how cute it looked playing. I made an agreement with her right then and there that she could play with it all she wanted, and when i was going to go to bed, or if the noise was too much, I’d give a ‘friendly” tap on the ceiling to let her know.
I have only had to tap once since that time. They even installed hardwood flooring, and they don’t bother me because we had that talk. Snoopy had a great idea. go up there during the day, when they aren’t making noise, and you aren’t upset. Tell them that sound carries more than they may think and it is keeping you awake/disturbing you/etc. Ask them if you can make the same arrangement I did with my neighbbor if they seem nice. That way, they won’t feel like they have to pussyfoot around, and you know you can give a tap when it bothers you without being thought of as too bitchy.
If they aren’t agreeable, go to management and file a complaint. Good luck!!