This is the closest Starbucks to my apartment and is therefore my go-to location for an afternoon pick-me-up or Sunday morning brew. I love the fact that it's located in the old Albert Britnell Book Shop, and they have kept a lot of the old books and decor which adds to the character.
The location itself is always busy, either from passing customers on the way to the subway, or from the nearby office buildings. As a result, the lines can be long, but they always move fast. There is plenty of seating (especially at the back) and free Wi-Fi (as with all Starbucks) makes this a comfortable place to get some work done while you enjoy your coffee.
The staff here are very friendly and they get to know you by name over time. They also have Clover coffee here, if you're into that sort of thing. The downside to such a great location is the amount of "squatters" who sit here for hours when they have nothing else to do. A time limit wouldn't go amiss, but I don't think Starbucks would ever implement something like this.