Food - I've been to this location multiple times and the food has always been good. My favourites include the tuna with 7 friends with diced tuna, avocado, and multiple sauces create a creamy, flavourful dish; the mushroom and cheese bibimbap which is a cool experience as it's served in a hot stone bowl, then mixed at your table. They're also very generous with the mushrooms and use a variety of them, too -- I think there was shiitake, button, and oyster mushrooms at least. The seaweed salad with black sesame sauce was unexpectedly good. The black sesame sauce had a nice sweetness, not to mention great aesthetic appeal. They have the most extensive menu of all the Guus, and most dishes are really great. One miss was the hot stone bowl dessert: ice cream, custard, and a sort of cake served in a hot stone bowl. The mix of hot custard and cold ice cream sizzling on the bowl was really cool, but I found it too sweet. The ice cream also melted really fast into 'ice cream soup'. I preferred the green tea ice cream which wasn't generic ice cream, but possibly house-made? It had large ice crystals and an intense green tea flavour, great as a palate-cleanser.
Service - staff are friendly, but super-busy so it was a little hard to flag them down at times. They did forget my drink one time, I had to ask for it again. The reservation policy is weird, I've tried to make reservations multiple times but couldn't while my friend had no problems.
Ambiance - definitely the coolest Guu, it's very urban with a Japanese flair. There is less seating than you'd expect from the outside.
Value - I've always had a good experience at Guu. I usually do make sure to order bibimbap or noodles so I don't leave hungry, but those dishes are tasty anyways. All in all great for a night out!