Built in 1871 as a beautiful single family residence, 18 Hereford Street's luxurious ambiance and beautiful historic detailing has been painstakingly and thoughtfully restored by the current owners over the past 30 years. Meticulously maintained with extensive improvements to include a 2023 build out of a garden level au pair/in law apt. New furnace, a/c, hot water. (See documents for improvements in MLS). First floor with French glass paneled doors, opening to lovely entry foyer with grand staircase. Livingroom and bay windowed music room on this level. Second floor features custom kitchen with brand new Fisher Paykel refrigerator, Viking gas stove, front facing window, dining room and family room. Upper two levels contain 3 bedrooms each. Private patio, 7 fireplaces, gleaming hardwood floors throughout, lofty ceilings. numerous closets. Convenient walking distance to Newbury Street, The Esplanade, Restaurants and Public transportation.