Set in a coveted Union Sq location steps to cafes and eateries, this 3rd floor penthouse affords a light-soaked floor plan w/ skyline views. A 6-unit building peppered with period details, the historic charmer has been masterfully modernized, merging glossy fir hardwood floors & classic crown molding w/ soaring ceilings and ample windows. Warmed by radiant heating, this stunner features a lovely formal living room with hand-carved wood mantels, original trim & ceiling medallion. Illuminated by a skylight, a sunny updated kitchen opens outward onto an expansive covered deck via French doors, blurring the lines between indoor/outdoor entertaining. A flexible floor plan with 2 gracious bedrooms, a quaint 3rd bedroom is poised for remote work. Equipped w/ private storage & laundry in the basement, unit 6 affords 1 off-street parking space. Set on a tree-lined 1-way street, blocks to the Union Sq Green Line, the bike path, Harvard/MIT, Rt. 93, and major bus routes, the location is an A+.