Brian's guest house was everything we needed. It's nice and private with a secured entrance - not to mention tucked away in a lovely neighborhood. We stayed in San Carlos to visit friends over Labor Day Weekend and the location of Brian's guest house was only a 10 minute walk to the town center (and our friends' house).
The weekend was one of the hottest in the Bay Area this past year and Brian quickly contacted us to ensure the house was cool and comfortable. He was nice enough to greet us in person and make sure wanted for nothing.
Would definitely stay again!