I have been to the Vancouver restaurant and loved it, and have been looking to try Guu in Toronto since I arrived and it did not disappoint.
From the minute you walk in the door where you are greeted like a celebrity in true Izakaya style the service was fantastic and very attentive.
We ordered the Edamame, Spinach Salad with Black Sesame Sauce, Tempura Shrimp with Spicy Mayo, BBQ Pork, Seared Tuna Sashimi and an Okonomiyaki - all were fantastic, could not fault a dish and I would happily come back here to eat again.
Only reason I am not giving five is they do over do the whole yelling thing. Greeting and saying goodbye is one thing but this place just doesnt stop, and when your sitting at the bar there is no way to have a conversation with your friends as its just too loud. Toning it down a bit with create a much better ambiance still with the fun.