You get 4 stars just for having a Tim Hortons!
Trust me when I say I'm addicted to the Iced Capp @ Timmy's. My cousins and I jumped for joy (literally) when we spotted one at the airport. Yes, people thought we were nuts. We were able to take a bunch of fresh doughnuts back with us on our flight. Our family in the U.S. were super happy. Tim Hortons just isn't the same in the U.S. The quality isn't quite there yet.
Restrooms at the airport are clean enough. They have a cool touch screen map at the airport, which we couldn't stop playing with. It was like a giant iPad. The airport is well maintained and employees are friendly. Things are organized. Our travels went smoothly.