It's difficult to say really. I've hated nasty housemates who've been er... "entertaining" in some sense of the word. Conor, Billi, Alexandra, Charley. But then there are some who I've either written off as total headcases and don't take their malice seriously (Caroline in BB13 was a good example).

I like nice people, but I also like them to have a bit of spark to them as well and not be like Hira from BB10 as an example, but more like Lauren from BB13.