I don't think I have heard of them in local Alfa circles, but that doesn't mean much with respect to whether they are good or not.
One of the best-known shops is N&M Sportscars in North Vancouver. Unfortunately, Nizar, one of the owners, passed away recently but I get the impression this did not affect the business or the quality of their work much.
Come join us at the local Alfa club meetings every 2nd Monday of the month (unless it is a holiday) at the Adega Restaurant, 1022 Main Street, Vancouver, BC. Come see if you like the guys and figure out if the membership is worth $20/year.