It's worth writing a note to the parents, as gently as possible. Don't say "the noise bothers ME, illnesses, etc," say the noise is bothersome to several of the residents. Explain you don't mind kids making noise, but keeping it to a dull roar would be much appreciated. I once explained to a neighbor child that she should save her loudest screams for real emergencies, because we were getting so used to hearing it that if something ever WAS wrong, we'd just figure it was nothing. That made her think, anyway - and now she's a new teenager, so is trying to be "cooler" than that anyway!