I have lived three years in my apartment, in november I got new downstairs neighbours. Me and my previous neighbour could get along very well, she even told me I was her favourite upstairs neighbour in the 15 years she's been living there. Around october, the house was sold to new landlords. Before she moved, she told me that she told the new landlords to NOT have a couple move into the apartment because you can hear each other a lot. I told them the same. A couple came living beneath me. I was disappointed at first that the landlords didn't consider our request. Anyway, not much to do about it so I suck it up. From the moment they move in, they leave the hallway dirty and sand everywhere. After awhile they are even too lazy to pick up some random stuff that they left on the ground for months on end. They almost always block the hallway area where we need to take the stairs to go to our home, they have two bikes that they leave there. Sometimes they put their bikes next to each other, sometimes they just block the door of my other neigbour, he's alone and struggles with his health... Three months after they moved in and basically took over the building with their loud voices and filth, I had an after at my place. We were maybe with six people in total and we were playing music until the morning :s. A week after that, I saw my new neighbour (that I talked with before, there were no issues, we were friendly to each other and didn't talk that much, just to say hello.) She told me she was mad at me because I had friends over, she couldn't sleep that night and she was stressed because she was doing a course. In the end the conversation ended with her apologising to me because she realised that she and her boyfriend were actually the ones that made most noise in the last three months. I told her it's okay and that it will probably happen again that we're frustrated with each other. We both just need to suck it up from time to time. In the 10 months that they lived here, I invited my friends over maybe 4/5 times. I am certain I can count it on one hand. Last month I had friends over around 10pm. We lost track of time and my friends wanted to stay in when I asked them that maybe it was time to leave. We stayed up until the morning and beyond :s. The next day my neighbour send me a text that she's sick and tired from not getting sleep. That I am the one making noise the whole time. I flipped out and send her the longest message ever. I told her that it's a two way street and their noise and filth does NOT compare to me inviting my friends in MY apartment where I live ALONE. her answer was: ahaha great! Then she wrongly send a text that she was meant to send to her boyfriend saying that I'm crazy... AITA for having friends over in my apartment?