Why are people complaining about the service? Sure, it's a bit brusque, but it's quick and always crowded, so be happy they turn the tables. If you want attentive service, go somewhere else. If you want good food at great prices, this is a place for you.
I love this place. One of the best in the downtown Chinatown. Especially recommended: all the noodle soups (I like duck and wonton) and the donut in rice noodle. Excellent flavor to the broth without being fatty. Meat is rich, and everything is generously portioned for the price. Good place to take kids or eat alone, as it is always noisy to begin with.