Most gorgeous, effective and serene coffee shop I've ever been to in Canada is Crew Collective & Cafe Montreal. As a remote worker, this is the pinnacle of cafes. Great coffee & Delicious food. People are super cool & smart. Fast, reliable internet. Very comfortable chairs (that's key). Located in an exquisite old bank building, with incredibly high art deco ceilings, huge cathedral-style glasses, beautiful brass finish and amazing modern touches in Old Montreal! A calm yet vibrant. There are private meeting rooms on each side-perfect for working in peace or having team meetings.
I feel cooler being there. I traveled a lot and must say this is One of the Best Coffee Shops Around The World You Have To See and Experience Before You Die! All I can say is WOW :)
Also, if you're an entrepreneur, there is also desks available for rent by the month in a private area. Info: https://collective.crew.co/