I love Double Zero and go here all the time. Their happy hour is the best... $5 glasses of house wine and prosecco and $5 "snack" portions of their appetizers, which are all amazing.
Just tried the marinated beets tonight: awesome flavour combination (grapefruit, goat cheese, and pistachios.. yummmm).
And the calamari... I think it's the best in the city. Love it.
Beyond the great food and drinks, I really like the ambiance. Good crowds, great decor... it's very warm and upbeat.