This is a lovely house in a pleasant residential neighborhood: There is a park across the street with playgrounds and a swimming pool (free!) and bike/running paths that lead all over Cambridge. The Alewife T station is right in the park, so it's super convenient.
Jurek made me feel right at home, responded quickly to all communications, and checked in periodically during my three-week stay to make sure everything was ok. He helped me out a lot by loaning me his bicycle while I stayed in the house!