JUST LISTED! An exceptional offering of an immaculate triple mint designer 4-5 bedroom penthouse duplex renovated to perfection with three private terraces atop an elegant full-service cooperative on the prime Upper East Side. Designed to a level of quality rarely seen, Penthouse 19/20B at 179 East 70th Street is a stunning union of modern luxury and timelessly sophisticated design on a coveted block in the heart of Manhattan's Upper East Side. Enter off of a semi-private newly renovated landing and be welcomed into a gracious square foyer wrapped in lime-wash textured walls with coved crown molding overhead. The floors are dressed in neutral marble with a ribbed inlay, warmed by sunlight streaming in from a glorious corner living room. Enveloped in oversized windows, the living room faces East and South offering grand entertaining space luxuriously expanded by two sizable terraces in both directions and anchored by a central wood-burning fireplace with a handsome stepped limestone mantle. The adjacent South-facing library is adorned with gorgeous custom millwork, textured wallpaper and customized inlaid tapestry. As you cross the gallery, you pass two chic lacquered doors behind which are a huge customized walk-in coat closet and an elegant windowed marble powder room with turned rope molding and metal leaf ceiling. Just beyond, the formal dining room is bathed in eastern sunlight and flanked by a third private terrace for those who like to dine al fresco. There is also a full-sized Viking Professional wine fridge with 150-bottle capacity. Just off the dining room, the windowed eat-in kitchen is finished with polished marble countertops with dramatic veining, a geometric mosaic tiled backsplash, lacquered cabinetry and a suite of high-end appliances including a Thermador gas range/oven with an overhead Miele vent to the exterior, a custom-paneled Thermador refrigerator with a huge freezer drawer and ice maker, an integrated Miele dishwasher and a mounted Thermador subcounter microwave. The built-in banquette sits in front of the kitchen window, and there is a large walk-in customized pantry. The washer/dryer is perfectly located in the adjacent service room/home office which also has an en-suite windowed marble bathroom with stall shower, for flexible use. The four principle bedrooms are all serenely located on the upper level, crowned by an immense corner primary suite with exposures East and South. There is an enlarged walk-in closet that has been stylishly outfitted and lit, and a discreet drop-down motorized television mount so that the penchant for late-night TV never has to obstruct your daytime views. The double-windowed primary bathroom has an oversized vanity with a built-in make-up counter, a private water closet with a smart toilet and a stall shower behind a frosted glass door. The bathroom is finished with cerulean onyx counters, geometric floor tiles and custom mirrored cabinetry. Immediately adjacent the primary is another large bedroom that faces South and East, picking up vistas of Billionaire's Row and Central Park foliage in the distance. There is a stunning neutral marble bathroom as well as custom built-ins which make this bedroom an ideal guest suite and/or additional home office/den. At the opposite end of the hall, two more spacious bedrooms are served by a large Jack-and-Jill windowed bathroom with a bathtub and oversized vanity. Additional features throughout this residence include central air conditioning with each room individually zoned, all new electric with a Lutron system and electric shades as well as built-in sound systems both indoors and out. A wonderfully maintained intimate full-service cooperative on a quiet tree-lined block, 179 East 70th Street offers a full-time doorman, live-in resident manager, renovated fitness center, bicycle storage as well as private storage. Residents enjoy close proximity to the 6 train and the Second Avenue Subway as well as the wealth of shopping, dining and entertainment experiences of the prime Upper East Side. Financing is allowed up to 50% and pets are welcome.