It is, by all appearances, and urban utopia. Come this spring, more than 500 people will work there, more than 200 will live there, and thousands more will dine and shop there. Its innovative tenant mix ranges from an insanely popular “doughnuterie” to a gourmet dog food shop and an internet-based boutique where you don’t leave with the clothes you buy. And this bustling village within a city- elevated by art and cutting-edge architecture- all exists within a two-block span in the coolest district in town. Could the Ice Blocks be the new model for modern living in Sacramento?