Four stars for the sushi, with an extra star for the location.
Moira is on the ground floor of a condo development in downtown Phoenix, easily walkable from other restaurants such as Pasta Bar and Roosevelt, and that itself is saying a lot. A modern sushi place located in a condo building in downtown Phoenix speaks a great deal to the development of downtown, and I give kudos and an extra star to the owners of Moira for opening where they did.
That all said, Moira is an excellent on the sushi point too. I had a Philly roll that had just the right combination of salmon and cream cheese (not too much cream cheese), a caterpillar roll with a great balance of color and flavor (and decorated, cutely, as a caterpillar) and a couple of nigiri with a very flavorful yellowtail and mackerel with an interesting sauce that complimented the fish.
I am hoping that this will soon transform from a place that you go to because you are downtown to a place people will go downtown for. And it may - because it is quite good. Well worth seeking out.