my favorite of the Guu's is Guu with Garlic on Robson . For izakaya, Guu Robson and Kingyo (on Denman) are at the top of my list. Favorites are the daikon salad, salmon carpaccio, pumpkin balls, and kim chi.
The other Guus (838 Thurlow and 375 Water Street) are great. At the Guu in Gastown, the spinach gomae is unbelievable.
Good for drinks. Has a whiskey bar in the back called Shebeen, and a long table cafe open in the day (and some nights for the long table series) called The Salty Tongue. Also affiliated with the Salt Tasting Room down the block located in Blood Alley.
Salt can be difficult to find: Blood Alley runs east-west, and Salt is located between Abbott Street and Carrall Street. You can't see it from the street -- you have to walk down the alley a ways until it becomes visible. (It's around the corner from Six Acres).
Salt is great for cheese plates, meats, wine, dessert ... a cute narrow wood and brick room.