Pin-drop quiet studio in a well-maintained and secure elevator building in the prime Upper East Side.  Features of this unit include extremely low maintenance, high ceilings, hard wood floors, comfortable dimensions and a ton of custom floor-to-ceiling closet space.  321 East 89^th Street is a charming elevator building steps from the Q and 4/5/6 subway at 86^th Street, Fairway and Whole Foods, and in close proximity to dozens of terrific restaurants, bars, markets and boutiques.  The building features an intercom entry, live-in super, central laundry room and bike room.  Guarantors and pieds-a-terre are allowed.  Not for investors and, sorry, but no dogs are allowed.