I just had mega bad luck. And my boyfriends old housemate was just as much of a dick. He let his girlfriend live there for free (she didn't have a job, or any friends in Lincoln, or anything to do). She used to sit in his room all day on the playstation. When the landlady found out she obviously wanted her out of the house, but this guy is pretty big and scary, and she was intimidated. He moved out halfway through the year, without paying for his part of the bills and without finding a new tenant. The landlady had to get a lawyer on him.
The guy had nada personal hygiene either. We were once trying to get something he'd taken from my boyfriend out of his room, and I spotted a big 6 pinter of yellow liquid. I thought it was orange squash to begin with, but as was pointed out to me, why the fuck would you put that much orange squash in a bottle? Later that night when we'd gone to bed he crept downstairs and emptied the container. We went down not long after (to get some food I think...) and the sink stunk of piss. When he was moving out we went into his room because we thought he'd just dumped all his rubbish on the floor for us to deal with (we were tearing our hair out at this point...) and there were a fair few bottles scattered around that were full of piss. Fat fucker couldn't even be arsed to walk down the stairs to use the toilet. :/
Man oh man... cleaning his room after he left was NOT nice.