Jessica´s place was very comfy, would recommend both for short and long stays. The room is spacious and has a comfortable bed. You get a private bathroom, and the kitchen is very well equipped. We also found everything clean.
The location is very convenient, with a metro station 10 minutes away by walking (if you have small luggage, it´s an easy walk. However, if you are with heavy luggage, keep in mind that some blocks you are going up hill). From there, it´s a 15-minute ride to downtown Boston. Near to the metro station there is a very good supermarket for food supplies and other convenient stores.
Jessica was very kind with us, we would definitely recommend her and her place.