Elena and Alberto are the most welcoming hosts that I have met through Airbnb; genuinely happy to have you and available to help out at any time.
Their house is in a very convenient location within walking distance to down town Sunnyvale (Murphy Ave.), where there seem to be more amenities every time I visit (TAP'T was my latest find).
The space is big enough for two people, clean, quiet and warm (I stayed in February, so it does get a bit chilly in the Bay Area at night). It has a good shower and a comfortable bed. The entrance/kitchen faces a private patio, and either inside or outside are good places to read (or do some work) while you have a nice coffee from the excellent selection that Elena kindly left in the kitchen.
The neighbourhood is pretty, quiet and feels very safe, just around the corner from Mathilda Ave., easy to get in and out by car, and with a local park to stroll around.