No local brew but my favourite Dim Sum downtown is Lai Wah Heen at the Metropolitan Hotel on Chestnut. Excellent high end dim sum but no beer. Good dinner as well. About 2kms from Pk Hyatt. You can take TTC Subway from Museum stop south for two stop to St Patrick and it is one block east and half a block south. Taxi should be about $10.

If you had rental car there are other recommendations for Chinese in the burbs.

(I have Dim Sum lunch twice a week in Toronto, more when I am in Hong Kong)