Charming apartment in this 1831 brick Federal-style home in Cambridge with beautiful patio. 2nd and 3rd floor duplex, walk up, 550 square feet. Full kitchen and living room with single sleep sofa for a small child 5 or over. (There is a loft and not safe for babies or toddlers). Bedroom has 2 single beds or made into a KING. Walk to MIT. 2 metro stops to Harvard, 1 stop to Beacon Hill or 2 to Freedom Trail. Walk to restaurants and shops. Owners live below and have a dog.