My husband and I went on the North Beach/Chinatown Tour in May 2013. I have nothing but good things to say! Chris, our guide for the tour, was very knowledgeable and a genuinely nice guy. It is obvious that he enjoys his work and has great relationships with all the restaurant owners.
We tried all kinds of hole-in-the wall places that we would have never tried on our own. (Tea, Truffles, Dim Su, Pizza, and more)!
The tour was spaced out perfectly so you do not get to full, but believe me there is plenty of food by the end!
I would highly recommended this tour for anyone who is looking for something fun to do in the city. We cannot wait to try the Mission district tour next time we visit!