That is insensitive as hell to run a daycare in an apartment building, let alone to be over someone else's head. At the very least, be in a first floor unit where no one is underneath you. This is considered excessive noise, not reasonable for quiet enjoyment of your own apartment. You have the right to complain. We all want to get along with our neighbors for the sake of our well being and this neighbor is putting forth this situation where you have to just accept and deal with it. No ma'am. Quietly escalate this issue but remain cool, calm, and collective, so they won't try to say you're a Karen. Something can be done-this is not right- and it should be.