Our tour guide Robin was amazing! Very personable, fun, and knowledgeable. He made the experience exactly that...an experience. It was the perfect amount of time, not too long, not too short. If I had to have one negative thing it would be the first winery that we visited. The owner was not that friendly, and I think they should tell you about the dogs before you get there. I'm not afraid of dogs, and neither was my fiance, but I have a friend that has a serious fear and that wouldn't have been a pleasant experience for anyone involved. Other than that, the tour was great! I learned a lot about San Francisco and wine from Robin! He was great!