Let me start off by saying that I am Chinese and have grown up on Chinese food, particularly dim sum.
The food here is decent. It's not drop dead amazing by any means, but when you're craving dim sum, it's a good place to go. It's authentic and yummy, so what more do you really need?
The service and atmosphere is what you would expect too: it's loud, there's plastic on the tables, very little decor, and the servers are rushed and speak in broken English. So basically, it's a typical Chinese restaurant. I know it might turn off people who aren't used to it, but I would expect nothing else.
I've gone a few times and will return, as always.