Classic Watertown two-family in a desirable neighborhood near the Belmont line! This well-maintained property offers two spacious units, each featuring two bedrooms, a full bath, living room, formal dining room with charming built-ins, and hardwood floors. The second-floor unit offers additional flexibility with a finished third-floor area featuring a family room and bonus room, complete with electric heat and air conditioning. Enjoy inviting front and rear porches, including an enclosed three-season porch with windows and screens, plus a private backyard with sprinkler system. Additional highlights include updated mechanical systems, a full basement with laundry and storage, a detached two-car garage, and ample driveway parking. Ideal for an owner-occupant looking to enjoy the upper-level living space while generating rental income from the first floor, or an investor seeking a solid multifamily opportunity. Conveniently located near Watertown High School, Oakley Country Club, Watertown Square, Arsenal Yards, the Charles River, and commuter routes to Cambridge and Boston.