Affordable space for commuter, 1 night/week at $200/month

Seeking a cheap space for 1 night each week, probably a regular night of the week (which night is negotiable). Looking for a quiet space, no frills, just a little better than a couch is OK. Within 10-15 miles of campus, in a comfortable location (i.e. not East Palo Alto). I'm Stanford staff, with postgrad qualifications in biological psychology. Please serious inquiries looking for an easy, temporary, routine house guest and willing to accept $200/month. Personal references available, socially and financially responsible, great credit.