I think the default Yelp description of 3 starts is very apt in this case: "A-OK". My girlfriend and I have been eating at Sushi Sky ever since we moved to Toronto over 5 years ago. She's been eating there since she started going to Ryerson 10 years ago.
Sushi Sky delivers consistently solid sushi and a very good price. We usually get 3 or 4 maki rolls along with the expected salad & miso soup. They don't have anything really fancy or different and the quality isn't as good as some of the more expensive Japanese restaurants in the city, but it's a great option of you're looking for a good quality to price ratio.
I also find the staff (who are all exactly the same from at least 5 years ago) very attentive. Usually there's tea waiting for you before your butt hits the chair and they never let it go below half. The food and bill are always brought promptly, but there's no rush to get you to leave if you're not in a hurry.
Some recommended maki rolls:
- spicy salmon (their spicy mayo is excellent)
- black dragon (if you like unagi)
- sushi sky (if you like variety)