Move-in ready and thoughtfully designed for modern townhouse living, this exceptional single-family residence offers a seamless blend of historic character and contemporary comfort. Originally built in 1865 in the Italianate style and later reimagined by architect Thomas Nash in 1904, the home has been comprehensively renovated by the current owners with great care and attention to detail. Spanning five stories and nearly 8000 square feet, the 20-foot-wide townhouse is complemented by generous private outdoor areas that elevate everyday living. The residence features seven bedrooms, eight-and-a-half bathrooms, a finished basement, and a private elevator servicing the home up to the primary suite level. Throughout, soaring ceilings, custom moldings, and a beautifully crafted staircase underscore the home's refined yet livable aesthetic. 123 East 71st Street is accessed through dual private entrances that open into an expansive marble gallery, offering a graceful arrival experience. Beyond double doors, a gracious living room and dedicated music room open directly to the landscaped garden, creating a natural indoor-outdoor flow. The garden is outfitted with a built-in grill, making it ideal for both casual evenings and entertaining. A full bathroom completes this level.  The parlor floor serves as the heart of the home, defined by striking architectural moments and sightlines to the curved staircase above. Elegant columns and an arched entry lead to a sun-filled, south-facing library at the front, while oversized pocket doors open to a formal living and dining room with a large bay window overlooking the garden. Just beyond, the eat-in chef's kitchen features dramatic 14-foot ceilings and a beautiful skylight that fills the space with natural light, creating an inviting setting for everyday meals and gatherings alike. A discreet powder room completes this level. The third floor is dedicated to a private primary suite retreat, complete with a spacious walk-in closet and a luxurious en-suite bath. The elevator conveniently services this level, offering both comfort and privacy. An additional bedroom and full bathroom are located at the rear. On the fourth floor, two generously sized bedrooms each feature their own full bathroom, with the rear bedroom opening onto a peaceful private terrace. The newly added fifth floor offers three additional bedrooms, two full bathrooms, and stair access to the roof, allowing for flexible use as guest rooms, offices, or creative spaces. The finished basement further enhances the home's livability, offering a laundry room, gym, lounge area with kitchenette, ample storage, and mechanicals-rounding out a townhouse designed to support a full, effortless lifestyle.