Welcome to 20 Chestnut St; U:1, a meticulously renovated Brownstone condominium and private Carriage House atop Beacon Hill, where historic charm meets modern elegance. This exquisite home offers four bedrooms, three & a half bathrooms, private courtyard and garage parking. Dream kitchen, complete with a butler’s pantry, seamlessly flows into a grand dining and living area, featuring dual fireplaces, soaring ceilings, Juliet balcony, and powder room. The lavish primary suite is atrue retreat, boasting a spa-like bathroom, dual closets, fireplace, and french doors overlooking the private courtyard. Two well-appointed bedrooms, full bathroom, laundry room, and wet bar complete the main living. Step outside to the large tranquil private courtyard, a serene urban oasis adjacent to the au-pair suite above the carriage house offering endless possibilities - ideal for home office, guest house, or stylish lounge. Steps from Charles St. & the Boston Common, home delivers unmatched city living.