For dim sum downtown, it is a decent choice, far better than Bright Pearl across the street. This is our default choice for Sunday mornings, because of course we can't afford Lai Wah Heen. Everything tastes like it should for Cantonese dim sum; not better and not worse.
For non-dim sum, I am a bit baffled by the raves this place gets by my co-workers, who admittedly may be more into Chinese-Canadian than Chinese. Much better Chinese food can be had a few doors north at New Sky. I'm not sure if they are open to serve the post-bar crowd however.