43 Upton is tucked off Tremont St.'s vibrant "Restaurant Row," in the heart of South End's active 8 Streets neighborhood. Sunny, 3 bed, 2 full baths PH duplex home retains its original, classic architectural elements: tall ceilings, well-proportioned rooms, molding, F/P (marble mantle). Lower floor features large, L-shaped L/R (F/P) facing west, overlooking Upton. Off the L/R is a versatile, open area (window/closet). Could be used as is or walled off for privacy (study, bedroom, playroom). Front-hall closet separates L/R from D/R. New C/A ('19) on this level. Kitchen (gas cooking) is conveniently located next to dining room. Kitchen has direct access to private, east-facing terrace, perfect for AM java. (Gas line in place). Upper floor has 3 beds. 2 very large. MBR has en suite. Hallway W/D. Roof rights. "Vintage" kitchen/baths, c. 1990. Close to Peters/Ringgold/Hayes parks, SoWa, Back Bay station (T, commuter rail, Amtrak). NON-SMOKING BLDG. 1 dog +1 cat. Dog breed restrictions.