I wouldn't say the service is bad here; it's just typical of what you'd find at any Chinese restaurant. Curt but efficient. Koi Palace is one of the best in the Bay Area for dim sum, which is served every day. Huge variety and good quality. The restaurant is also reknowed for it's seafood, much of which you can see swimming in the tanks at the front. Yesterday we had our company's holiday lunch here, so I was able to try a 10 course seafood banquet. The food here is a notch above other Cantonese restaurants, with items such as abalone, sharks fin soup, and fried rice with dried scallops. One standout was the roasted duck, which was delicious.
The restaurant can get loud because it's not huge and is always crowded.