Williamsburg: Meet Mercet Negre, Noho transplant, Spanish food den, and Williamsburg's newest hip rooftop. It's the second location of the Bond St. restaurant Mercat (the Negre moniker originally went to the restaurant's chic basement lounge), and it (tentatively) opens tonight with the cuisine of chef Oriol Sala Colome. The menu is incredibly expansive and eclectic compared to its sister restaurant's collection of tapas. Here we have the smaller items—croquettes, empanadas, meatballs—as well as salads, rices, entrees (Catalan sausage, chicken wings, ravioli carbonara?), and desserts (icy pops!). It's a big get for Williamsburg, a nabe suddenly drowning in a sea of great culinary options. Send all early reports this way.