designed by renowned architect alvaro siza with interiors by gabellini sheppard, duplex 9a is a 2,479 sf three bedroom three-and-a-half-bathroom duplex residence featuring an expansive private 864 sf terrace with exclusive direct elevator-to-residence access plus dual service entries on both the living and bedroom floors. elegantly appointed modern finishes and wide-plank oak floors embrace a neutral color palette and the sophisticated custom architectural staircase is composed of custom wood handrails, glass balusters and oak treads. double height ceilings coupled with oversized windows provide ample sunlight and feature sweeping views of the hudson river to the west and uninterrupted views of downtown to the south. the chef's kitchen features top-of-the-line stainless steel gaggenau appliances including: refrigerator and freezer, under counter wine cooler, dishwasher, gas cooktop, oven and speed oven and integrated insinkerator trash disposal unit. the italian, aster cucine, custom walnut cabinetry pairs exquisitely with the honed grigio nicola marble countertops and slab backsplash plus a custom island with a striking waterfall edge. the spacious primary bedroom boasts a 5-fixture bathroom including radiant heated floors, honed greek volakis stone floors and walls, greek sivec marble countertop and custom medicine cabinet and lighting designed by gabellini sheppard. 611 west 56th street's exclusive amenities suite include an outdoor garden mezzanine; a state-of-the-art fitness center with designated yoga and training studio; changing rooms with steam rooms; a media room with billiards table; a playroom; and a large entertaining lounge with separate dining room, kitchen, and discreet catering kitchen. parking, as well as additional storage units, are also available. nestled at the junction of the upper west side and midtown west, between riverside park south and central park, now known as hudson west, pritzker laureate, alvaro siza's 611 west 56th street is the most refined addition to what has become a certifiable "architect's row" along the west side of manhattan. pictures reflect apartment finishes and may not represent the actual apartment.