When it comes to maximizing all your space in an apartment, nothing does the trick like adding a loft. This one-bedroom apartment, at the Greenwich Village co-op 35 East 10th Street, did just that in a recent renovation. A well-designed loft of glass, steel and wood creates a nice big living room below, with a spacious sleeping alcove above. On top of that, a wall of glass in the rear of the apartment offers a seamless transition out to its own private patio. Amazingly, this unit sold for $500,000 just three years ago, and now it’s on the market post-reno for more than twice that amount.