Me and my gf were forced to have roommates in our uni's dorms this year. FIrst ones were a guy and a girl. Over the course of few months, they were haven't cleaned the common space once, even after being told to do so several times. They really didn't talk to us, but if they did, they really weren't nice. Top of the cake was when we were preparing to go to school in the morning (7:00 AM) and the girl came to us and started complaining that we are too noisy. Before I could say anything, my gf appeared out of nowhere and started shouting to her about the things I mentioned above (and about them having loud visitors over the night few days ago). The girl was shocked as much as I was (my gf is quiet introvert) and then run back to her room and locked behind her.
After that, we asked for new room and we got it. Our new roommates were pair once again. Immediately after we moved in, we met with the guy and he was friendly to us. We spent rest of the day talking with him and then with his girlfriend when she returned from the school. So we wished each other good night and went to sleep. And then it started. Music! Out of nowhere. And then singing! We asked them if they could be little bit more quiet, they apologized and told us that they didn't realize that it was so loud. And they did for one night. They were true "party people" so they either party at the dorm or went somewhere else - in which case they returned back in a good spirit and continued in their room. It got to the point that my gf bought earplugs. But to give them some credit, they kept the common space clean and were probably the best ones out of our roommates. And the funniest. They were older that us and were in their last year of Master's Degree. But they were so dumb sometimes. Really shows how bad the education system here is. Especially the girl. She didn't get the difference between locked and unlocked door, we had to teach her economics (her subject of Master's Degree), didn't know which food was her in the fridge (even after we split it so me and my gf had upper part and they lower one) and overall weren't the brighest. To wrap this part up, they were fine friends, but really bad roommates.
They left in April and we were alone for few days. There was big exhibition during that time in the city, but we were out of the city. When we returned, we found doors to our cell wide open, our kitchen utensils used and all over the kitchen and thrash bin full. I'm not even talking about our toilet paper that we bought day before we left all used up. Apparently, they put some people to our cell over the weekend. We never met them, but I wish I could just to... you know...
So after complaining at the reception, they tried to contact the people, but got no response. So they had to clean our cell by themselves. They also apologized to us... And THEN DID IT AGAIN! Once again, we left for the weekend (our last weekend before the end of the semester) and we returned once again to destroyed place. At least, our room was okay, because we always lock it.
So yeah, after this experience, we decided to rather spent 2 hours per day in the train next semester that living with someone else.