This review comes with a warning. Only purchase your coffee here if you are willing to be ruined for all other coffee.
The location is cool, if not secluded - buried at the end of Davies St. And the atmosphere is your standard "coffee house" fair with over-sized chairs, world music and free wi-fi. But what's different is the staff and the coffee.
I found the staff to be extremely helpful and willing to explain to you what you're buying. The guy who helped me explained what to expect from different styles of coffee, and broke down the flavour profiles of each country. And as the name implies they buy all their beans green and roast them in house. So he was even kind enough to tell me how long coffee will truly stay fresh after roasting (which isn't long...about 3 days).
But the best part was when I got home, ground some beans and made myself a cup of coffee. It was a near life changing experience. 20 minutes later I can still taste the amazing flavours, and smell the aroma (it made me use the word aroma!). This coffee has completely ruined all other coffee for me. I can't go back to one of those Tim Horton's paper cups full of sludge. Not even Starbucks can compare to the coffee you'll get at MGC.
I suggest every person drink at east one cup of coffee from this place although I'd wager you'll never be able to drink just one.