This apartment was once the home of the late piano virtuoso Artur Rubinstein and has not been on the market in 45 years. If you are looking for space location and light this apartment has it all. The 5 bedroom duplex is located on a very high floor of an excellent Park Avenue building. The proportions of the rooms are large making the first floor of the apartment ideal for entertaining. The apartment has a Living Room with wood burning fireplace and 10 foot ceilings a Formal Dining Room Library and powder room. The kitchen and service areas include 4 staff rooms which can be combined in a number of different ways. On the upper level all five of the bedrooms including the spacious corner master bedroom are outside rooms facing Park Avenue or south onto 81st Street. The building boasts a fabulous gym and playroom as well as full time staff and live-in resident