Located in one of the Upper East Side's most prestigious and charming enclaves, this magnificent nine room duplex boasts sparkling East River views from four major rooms. One enters from a semi-private landing to an impressive formal gallery anchored by a dramatic curved staircase. Flooded in sunlight, the baronial East-facing 30 foot living room and extremely generous dining room both feature wood burning fireplaces and extraordinary river views. The delightful kitchen and fully equipped butler's pantry are laid out perfectly to accommodate gracious entertaining or comfortable family living and feature top-of-the-line appliances. The main floor also encompasses a lovely den or library, perfectly situated off the kitchen to serve as a casual space, as well as a large bedroom with full bath, and a powder room. Ascend the gracious staircase to find a fabulously large and sunny Master Suite, complete with large Bedroom and Den, which enjoy gloriously bright East River views, two full baths, and an office. The suite also includes three large walk-in closets. In addition, there are two generous bedrooms with en-suite baths and a separate laundry. The spacious and flexible floor plan allow for four or five bedrooms plus a library, and 5 full and one half bath. In addition, the sale also includes a separate staff room, which has been converted into a private gym and sauna. Meticulously maintained with previous renovations by designers Mark Hampton and David Easton, but retaining many of the beautiful original details, this is truly a splendid home. 10 Gracie Square is a full service white glove cooperative with a private porte-cochere and two attended entrances on East 83rd and East 84th Streets. It offers a brand new state-of-the-art fitness center including a basketball and squash court. It is situated on the South end of Carl Schurz Park with direct access to the East River Promenade and nestled in one of the city's most attractive and inviting neighborhoods. There is a temporary three month assessment of $2,527.96 payable in January, April, and June. Virtually staged photos