Cafe Castel is the place to go for an amazing tasteful coffee. It's located few steps away from McGill's campus and you can go there via metro station Peel. The interior decoration looks like a very old castle and the tone of the ambience is quite acceptable.
How would I describe their staff? Friendly, positive, helpful and awesome coffee makers . The artistic designs in your cup are original and very well done. The least I can say, it levels up my spirit. I ordered a large latte which came back for around 4.50$ and that's tax in.
I'd recommend this coffee shop for take-out, studying solo or catching up with a friend.
Ps: They do have free WIFI (You have to ask for the password). Minimum Interac payment is at least 4$. I found one power outlet but it was already occupied.