I am a single professional who works long hours and spends little time at home (Mostly just Sundays as I work 6 days per week).
I have lived in share houses previously, and can provide references from past housemates if required. I am a non smoker, who is tidy without being too picky, but always clean. If I am having a few drinks with mates, I prefer to be at the pub or their house (who wants the hassle of cleaning up!)
I do have as small pug cross poodle called Django that I would like to have a bit off grass. He is a little legend and gets on well with other dogs as he has been taken to the dog park from a young age!
I would also consider paying a bit more for the bottom level of a house etc