Abosultely great stay with Heather/Mario and let's not forget - Goldie (their faboulous Chihuahua ). They made sure my stay was as enjoyable as possible.
Location is so close to Coliseum BART station (10-15 mins walking, or 2-3 mins by car - there is daily $2.50 parking available next to the station) - so trips to and from the city were breeze (20-25mins by BART to SF downtown).
I would definitely recommend anybody coming to SFO to consider staying at Heather's place.