I went for a Sunday lunch without a reservation, got a table immediately and the duck arrived mere minutes later, so this could be an option for anyone unable to secure an evening spot. I see other reviewers have generally scored the service a bit lower than the other aspects, but in my view the service was very good. Maybe this depends a bit on how full the restaurant is when visiting. The duck itself tastes very good and the presentation of the condiments was top notch. Highly recommended for all Beijing visitors, just go to the Dong Si Shi Tiao subway station, take the Dong Si Shi Tiao South exit and the restaurant is in the Nanxincang pedestrian street right nearby, marked by several red lanterns.