Despite all that water, there aren't too many harbourside restaurants in this area. Fortunately this one hits plenty of culinary high notes, though service could be substantially more switched-on. It's best in summer, when wharfside tables give you views of Walsh Bay with a screen protecting you from the sun. Food is sourced from high-quality Australian producers and includes good vegetarian/vegan options.
It's also a bar; flopping down here on yacht-style seating on the edge of the wharf with a drink is a very pleasant Sydney experience.