Elegant convertible 4BR home with 2 additional library or office rooms available in the Ariel East, a premier Upper West Side building. This spectacular home offers stunning Hudson River and Manhattan skyline views from the East, North, and West. Combined with the unrivaled amenities and luxury provided by the Ariel East, this truly is a once in a lifetime residence.Enter this spacious 3265 SF duplex, convertible 5 bedroom/4 bathroom with a 243 SF terrace on the 23rd floor. The 23rd floor includes an elegant layout with an expansive living room/dining room, open chef's kitchen, and an extraordinary master bed suite with a spa-like bathroom featuring Siberia marble flooring, a lounge/library space and two walk in closets.There are hardwood floors throughout, and the space is flooded with natural light thanks to the floor-to-ceiling windows. The windowed kitchen has Viking appliances including a dishwasher, wine cooler, fridge, and microwave. The living and dining area is the perfect place to take in the splendor of NYC with its large windows and open views to the West and North. Down the spiral staircase, you'll find two split bedrooms, an office with beautiful built-ins, a living room, and a kitchen that has been converted into a laundry area with separate Bosch washer/dryer units. Step onto the private terrace to experience beautiful sunsets off the Hudson River or take in the city while enjoying your morning cup of coffee. There are custom closets throughout, and an additional storage unit in the basement.Experience all of this In the Ariel East, which features a La Palestra gym, children's playroom, pool, screening room, 24-hour doorman and concierge, and more.