Perfectly located on a picturesque and tree-lined street in the heart of the Upper East Side, this splendid townhouse presents a glorious combination of period detail, an attractive and thoughtful renovation, and modern convenience. At an elegant 18 feet in width with the luxury of a well-designed and flexible floor plan, the residence benefits from marvelously high ceilings and is gloriously light-filled. Accessed through a wrought iron gate, the front steps lead to the very welcoming Entrance Hall and the staircase to the upper floors. The cheerful and cozy Dining Room is nearby, through an entrance with wide pocket doors. Connected via a Pantry and Wet Bar, the pristine white Kitchen is equipped with state-of-the art appliances, Carrara marble countertops, and a dining banquette and has the added benefit of a wood burning fireplace. A French door leads to a terrace with steps down to the Garden. From the Entrance Hall, a Powder Room, two coat closets, and the Elevator, which accesses all floors, are conveniently accessible. Above, a pretty and well-proportioned Living Room has a coffered ceiling, a wet bar, and a wood-burning fireplace. French doors with a balcony and two large windows look over the lush garden below. Nearby, a Library, currently configured as a Bedroom, has a wood-burning fireplace and an ensuite bath. Throughout the two entertainment levels, ceilings soar to over ten feet, and period detail is complemented by a top-level renovation that includes gallery-quality lighting and sound systems. The tranquil private quarters extend across the fourth and fifth levels of the house. The fourth floor includes a gorgeous square Primary Bedroom with a wood-burning fireplace and sun-drenched southern outlooks. Nearby is a luxuriously generous marble bathroom with a glamorous soaking tub, double sinks, a glass-enclosed shower and heated radiant floors. In addition, there are ample closets and a convenient Office. On the same level, there is another Bedroom with an ensuite bath, and above, there are two further large sunny Bedrooms, each with an ensuite bath, one of which has a wood-burning fireplace. These are supported by a cozy reading nook and study area, and a laundry closet. At ground level, and also accessed by a separate front entrance, as well as by the internal staircase from the Kitchen and the elevator, the Garden Floor has a wonderful Media Room with a gas fireplace that opens to the 37-foot deep Garden. There are also areas for Laundry, storage, and very well-organized Utilities and Mechanicals, as well as a Staff Room and bath. The garden, fully terraced and lushly planted, is equipped with a grill for outdoor dining and has a very attractive and atmospheric built-in fountain. Throughout this marvelous residence, the impeccable stewardship of the present owner is evident. All systems, such as multiple-zone central air conditioning, Control4 smart home automation system with alarm, and lighting have been upgraded and meticulously maintained. In addition, hardwood floors, custom millwork, and painstakingly restored original features underpin an elegance that extends to every detail.