Female seeking housing from mid-August - September 22

I am a recent female alumnus of Stanford looking for housing, preferably on-campus or as near campus as possible, from mid-August - September 22. I'm looking for the cheapest possible option, including sleeping on couches. Hoping not to spend more than $800 for the whole stay.

Will put in my fair share of housework/childcare/pet grooming/etc if needed. I'm trying to finish up a research project at Stanford before moving on.

Quiet and easy-going, does not smoke, do drugs, drink, party, no significant other.