I travel alot, and therefore tend to look for short term stays when I am around the bay area or wherever.
I am most definitely a laid back person, and I get along best with happy people, because I am like that myself. Tend to be on the cleaner side of the spectrum, since I don't tolerate chaos very well.
I like cats and dogs, and they like me. So if there are pets in the house ... bring 'em on.
If I do say so myself, I am very considerate, and unselfish, which I think is the most harmony inducing housemate quality.
And lastly, I am not a big time TV watcher, and I really like living in places where the tube is not the central focus of life.