Porto Rico, one of the city’s best (and most affordable) coffee stores, is about to add two more locations. Owner Peter Longo tells us that one branch is coming to Williamsburg, at 636 Grand Street, not far from the company’s roasting facility — a good thing, too, as Williamsburg definitely needs more coffee for its growing number of idle intellectuals. The other Porto Rico will open at the Essex Street Market, but in a space smaller than Longo expected. (He wanted the adjacent spot too, but the city awarded it to the Lower East Side Girls Club, who will sell baked goods there.) “Cookies and coffee go really well together,” he says, resignedly. Both new locations will open on April 1; drop in for a tasting anytime.