My husband and I have eaten dinner in Toronto a total of two times, and both of those times were at Pizzeria Libretto-- this time we chose the King Street location, though.
Their new patio was quiet and comfortable, and our waiter was very attentive (although the sparkling water I ordered never materialized).
The pizza was as good as we'd remembered, but the beef carpaccio--which we'd ordered the first time we visited as well-- was slightly diminished. We'd just had the most amazing (and much more expensive) carpaccio at a different meal earlier in the week, so our perception of its quality was certainly influenced by that. I'd still recommend if you're looking for a plate of it, though!