Lived in this pretty neat but old apartment with my partner for a few years although we kept feeling absolutely frightened whenever we would have to go to the basement to put in/take out clothes from the washing machine that was down there. The only access to the basement was from a trap door on the kitchen floor. The stairs were extremely steep and the basement was unfinished. Facing back to when one would go down, there was the only half-finished room in the basement was about three meters long by three meters. The ceiling was VERY low, about 6 feet low. There wasn't anything in that room. Just a light in the middle, on the ceiling. The room had four walls but no door, just an opening in the wall. If we could've had a door, we would've locked it, because that room had extremely bad vibes. The rest of the basement was unfinished and had random abandoned/broken furniture laying around. You could not see the end of the basement because of the very poor lighting down there, which also participated in the creepiness. One night as we were having some pointless argument about dirty dishes, we were in my office, which was right above the tiny empty room in the basement. As our voices starting getting louder during the fight, we were interrupted by an extremely loud scream that was coming from the basement. A woman screaming so loud it turned into a gurgle as the voice broke. We could feel the floor shaking. We turned pale and wondered what the heck happened. We did not want to go downstairs to check, but there was no way to enter the basement other than the trap door from the kitchen; no windows, nothing. The trap door was always blocked by our small kitchen table and a chair, and it was that way on that night. So no one could've entered the basement. After a while, my (now ex) partner decided to go down to check because what if there was a woman trapped down there. So I went along. Nobody was there. We checked around with our phone lights. Nothing. The tiny room had broken glass scattered around because the lightbulb exploded somehow. I had showed the room to a friend the day before (every first visit of the apartment included a visit in that odd room), the light was fine then. No idea what happened down there, we never spoke about it and we both moved out shortly after this as we seperated. Couldn't've been a neighbor and the only next-door neighbor that could've heard it was absent that night.