Harvard is such an enchanting place, and the apartment is just about 10 minutes walk from Harvard Square. With the subway, you can get downtown Boston in about 40 minutes door-to-door. Plenty of Uber and Lyft, although the road traffic can be pretty bad in and around Boston. I was commuting to the BCEC conference center every day by subway. A very safe, well-lit neighborhood.
The studio apartment has a nice mix of privacy and common areas - a desk, bed and a private bathroom with shower. I only used the other areas for coffee.
Charles & Christiana are very friendly and ready to help, and happy to chat in the evenings when I got back.