FOR SALE: 270 Jay Street, Apt 4G, Concord Village, Brooklyn, NY 11201 The Unicorn of Downtown Brooklyn: Sprawling, Shockingly Cheap, and Financially Smart Tired of Brooklyn apartments that cost a million dollars but have the square footage of an upscale cardboard box? Want to live in the heart of the action without subsisting on ramen noodles for the next thirty years? Welcome to Apt 4G at 270 Jay Street. The Space: Actually Big