Generally I wouldn't trust a place that advertises dim sum as "Chinese tapas", but we had a Groupon and gave it a shot.
A bit pricer than Chinatown with the average dim sum dish ranging between $4-7. We ordered the sui mai, pork dumplings, taro dumplings which were made well. They weren't greasy or overly slimy like the bigger, more busy Chinatown restaurants and each piece was significant, almost like made to order. I don't think the dumplings were frozen, and if they are then they are pretty high quality.
This isn't a bad place to eat if you catching a show across the street but since the prices are almost double than what you pay in Chinatown, I might just stick Rosewood for my dim sum fix.