I'm a Vancouverite and it was big news to hear that Guu was coming to Toronto. I've been a couple of times and the wait for a table keeps getting longer and longer. On our last visit, we showed up at 5 (opening time) thinking we get in with the first rush. Boy were we wrong, there was already a long line up, i'm guessing people starting around 4:30 or even earlier. We did get seated at 6:30 so a 1.5 hr wait isn't too bad as one girl standing in line showed up at 5 hoping to get a table for 8pm with 12 people.
Toronto Guu has a lot of the original dishes from Vancouver, Karage, Ebi Mayo, Ikura, Odon, etc. Not much is lost with this location as the original chef, Masaru Ogasawara from Vancouver relocated to oversee the location. Great good and pitchers of Sapparo are only $16 and change. Go early and be prepared to wait...but worth it if your craving izakaya.