Me and my cousin went there for a cup of 'java' after enjoyed Summerlicious @ The Red Tomato, across the street.
We were being asked inside 'Canteen" by a tall girl (who grabbed the reservation table' list' tablet) who the ones brought me to the table located next to the street outside.
We finally ordered for 1 cup of coffee and 1 cup of cappucino. Then, the lady who served us & showed her 'unsatisfied' 'face' and notifed us either we "should" 'grab-and-on' next time if we just ordered for a cup of coffee, since all the tables on the street is for lunch / entree dinner; or sit at the quiet corner, from other side of diner' tables.
We then offered we can sit on that quiet corner, but she simple asked us to stay and enjoyed this time.
For my point of view, the host who brought us outside of 'Canteen' should ask if we come for dinner or just for a drink, ahead.
Atmosphere : U can get the same (or even better) patio-street style from other restaurant.
Price - Moderate (but I would suggest go somewhere else, if you would like a strong taste of coffee; esp. they don't serve dessert or even slice of cake).
Service (1 out of 10) : 3 - 4 out of 10.
Selection : You can get better and more selection from other 'grab-and-go' or take-out cafe.
Will I go back ? : NO. Defintely not.
Alternative Suggetion : I might try LUMA (Upstairs of TIFF) next time - better street view.