Sun-Filled Brownstone Duplex with Wood-Burning Fireplace This charming two-bedroom duplex is set within an intimate and beautifully maintained brownstone co-op at 121 West 77th Street. Occupying the front portion of the fourth and fifth floors, the residence enjoys sunny southern exposures overlooking a picturesque tree-lined Upper West Side street. With just three apartments in the building, this quiet co-op offers a rare sense of privacy. A shared washer and dryer are located in the basement, and in-unit washer/dryer installation is permitted with board approval. The main level features an expansive living and dining area with impressive 10'2" ceilings, hardwood floors, abundant natural light, and a striking wall of exposed brick surrounding a wood-burning fireplace. The generous proportions create a welcoming space for both everyday living and entertaining. The kitchen is conveniently located just off the living area, while a distinctive spiral staircase leads to the upper level. Upstairs, the spacious primary bedroom features exposed brick and a wall of closets. A second bedroom and full bathroom complete the upper level. With high ceilings, hardwood floors, exposed brick, a wood-burning fireplace, excellent storage, and abundant southern light, this unique duplex offers classic brownstone character in a highly desirable Upper West Side location. The location is quintessential Upper West Side, just one block from Central Park and the American Museum of Natural History and Hayden Planetarium, and surrounded by excellent neighborhood shopping, dining, fitness, and convenient transportation, with Zabar's, Fairway and Citarella all close by. The apartment is currently tenant-occupied through December 8, 2026. *some photos are virtually staged/ renovated