Lovely apartment with great hosts. We stayed for a week and had a good time.
Public transport is available in close walking distance (10-15 mints at Porter Square). Lots of food options available as well. Boston Downtown is around 10-15 mints from Porter Square using subway.
The apartment is in a quiet neighbourhood with plenty of sunlight and space. One point to keep in mind - the kitchenette wont be great for cooking, just to heat stuff up.
George and Mary were very kind and we would definitely recommend this place.