Holy crap this place is expensive! Now that I got that outta the way, here is what I thought of Guu.
I like the renovation and the layout; patio looks chilling too. Service was exceptional. A lot of yelling, but exceptional. Our food came out fresh and promptly. I had been to Guu downtown and the tapas were delicious from my memory. Couldn't say the same this time though. Surprisingly, their sashimi was friggin' amazing. Probably the best I have had in Toronto. The dessert platter was a great way to end the meal. Highly recommend it if you have someone to share the platter with.
Parking is limited and you'll have to walk a little. Hot food was mediocre and holy crap expensive. I probably would not come back to be honest but I would invite ppl to go try it out.
BTW... Bad place to go on a date, loud and not much privacy.