A rare opportunity to own a home 100 yards from Union Squareand only mile from the new T stop. Right in the heart of the square, 21 Stone is nevertheless tucked away beautifully on a side street, at the foot of Prospect Hill. A private front entry leads you into the main space, where high ceilings, ample windows and freshly refinished floors make the open plan living and dining area shine. The kitchen is smartly designed, including a great southeast facing breakfast nook. Private laundry and additional storage are in the well-lit basement. At the back of the house there is one off-street parking space and a lovely shared patio area.