I lived in an apartment building a few years ago, and the same thing happened in the apartment above mine. I don't get it. Management was always checking up on us, bringing in crazy things that no one has like a dishwasher and paint and computer desks, but they didn't notice the flophouse above us for six months. What was really crazy was that no one slept there. It was seriously a flophouse for sex and drugs and parties shared by ten or twelve students, except they decided to forego the "sharing the rent" part.