I stayed at Sandra's place for about 2 months over the summer. It was very cute--the bed nook is a great touch and the balcony is lovely with an amazing view of the whole bay. The backyard is filled with beautiful cactus and plants. The place was quiet, which was great as I was studying for the bar exam.
I didn't have any problems with my stay. Sandra kindly laundered the bedding weekly. However, lack of access to the washer/dryer for other clothing might be a downside for anyone doing a longer stay, although there is a laundromat about a 5-min drive away.
For those driving (and a car is recommended here, as it is a residential neighborhood and very little is within walking distance), I feel I must note that within a few hours of parking outside the house the first day I arrived, the catalytic converter was stolen off the bottom of my truck. A few days later, my entire truck was stolen (luckily, it was found undamaged a few days later.) Obviously, these occurrences were not the host's fault, but they were major and costly bummers for me. I would recommend having an antitheft device for parking here.
Apart from those issues, this was a very nice place to stay.