I have been here many times over the years simply because I love their pork and chive fried dumplings, although the filling is a bit sparse and usually pretty greasy. Not so bad for me because I love the fried lattice, and one order fills me up so it's still a cheap lunch at $6. Other dumpling flavours are good too, including the vegetarian options. I believe these are the best in Chinatown (& let me know if you know a better spot, I have tried many in attempts to top dumpling house), however I have had better in Koreatown and north of the core (of course.)
The service is above average for Chinatown, super fast; I think I caught a smile a couple times! The tables are close together and slightly greasy. There are mirrors and cool masks on the walls, so despite sitting close it doesn't feel too crowded. The tea is usually weak, but still welcomed.
It's worth noting that the picture of the rat many years ago is still used as an example in the food handler's slideshow, ha!