“I love the light and the layout,” she said. “I felt at home the moment I walked in." A large one bedroom condo on the seconnd floor of a classic brick Harlow building just outside of Harvard Square, 31 Concord #7 offers convenience, comfort and quality. It has high ceilings and windows on three sides which bring in beautiful light. Set back from the street with a working fireplace, it might be the coziest place in Cambridge to watch the snow fall or have people in for dinner. Although updated over the years, the unit retains the graciousness of an old-world building and has an openness that is ideal for contemporary living. There are ample closets throughout and a deeded storage locker in the basement. The building is well cared for by an active association and professional building management. Recent projects include replacing plumbing risers and some upcoming exterior masonry work. Brilliantly located and wonderfully stylish, 31 Concord Ave #7 will likely cast its love spell on you as well.