This fabulous and enormous high-floor duplex in a top white-glove prewar features huge south-facing windows and light and air in every single room! The 540-square-foot living room with a wood-burning fireplace, laid out along three huge South facing windows, flows into the equally spacious dining room which benefits from both southern and western exposures. Upstairs is an elegant library, also with a wood-burning fireplace, three spacious bedrooms each with its own en-suite bath, and a dressing room/office off the primary. For under $5 million, this is the best buy today!