Starbucks is probably one of my most frequently visited places, and this is not one of my preferred locations. Don't get me wrong - customer service is still okay and they never get my drink/food wrong. But there are just many reasons why I would prefer a different location (which I'll list below).
My school is directly above this store, so this place gets packed with students and staff at any given hour. I recommend you use the Starbucks app to order in advance so you can just pick up at the bar. It came save you anywhere from 15-30 minutes! There's also not much seating here. There's a few seats inside the rather small store (always filled with students), and a few tables outside the store.
One time I came here during frappy hour, and it was a huge mistake. It was already summer holidays, so there were barely any students on campus, and it still took about 30-40 minutes. The line moves fairly quickly, but the wait for your drink is way too long. Another time, I had called because I wanted to ask the manager a question regarding Starbucks sponsorship and the person I was talking to rudely said he would not tell me if the manager was in or when he/she would be in. Another time I had forgot to ask for a cup of water with my drink so I asked at the bar and I kind of got attitude about it. Perhaps it was an off day and I should have remembered to ask when I ordered, but it also wasn't very busy at the moment.
But still given that I wouldn't want to walk outside or all the way across Eaton Centre, this will still be the Starbucks of reluctant choice when at school.