Like some other reviewers, I found this service somewhat by accident when searching TripAdvisor. Booked them for two private tours - half day at Imperial City and full day at the Great Wall and Summer Palace. Found my guide Judy to be very knowledgeable and fluent in English, and gave me the "back story" on the attractions. The driver also competently navigated the Beijing traffic, which is quite a feat. Loved how they personalized the tour according to my requests and did not force shopping stops on me. Also included two lunches at excellent restaurants. Was like having a Chinese friend show you the sights. Overall a great service at a reasonable price and would recommend them highly to other Westerners.