I tried Lettieri today after dinner and I expected a little better since the reviews here are at 4 stars. I had a double espresso and my wife a cappuccino; the coffee was good but a little bland - for that I'm not complaining because the lady asked me if I wanted it "long" or "short" and I automatically opted for the first choice, without remembering how people in North America prefer mild coffee over strong, so it was my fault; however, I tried my wife's cappuccino and that definitely wasn't great. She says that Starbucks' is better and I agree with her.
The place itself is shared with Hero Certified Burgers, and that for me is not an advantage - it lacks that "coffee place" feel.
Maybe I'll give them another chance, as there are not a lot of coffee places near here. But Dahso Chocolate Cafe (15 St. Clair W) must be closed for that to happen.