Stay with Heline!!!! The room/place has everything you could possibly need. I'm quite picky when it comes to Airbnbs, and this place checks all the boxes and more; it's such a steal: super clean and cozy, clean bathrooms with soap/shampoo provided, comfortable, quiet, lots of privacy, convenient location, safe, and super easy in terms of coordination. Heline is very communicative about accessing the house and room, sending details the night before your travel date. The front doors and room door have key codes and locks automatically, so your stuff is safe. The room is very comfortable, and comes with a sofa and desk for working. Heline also provides extra comforters and pillows, and the thermostat is turned up to 70, so you won't freeze if you're visiting during a Boston winter.
Such a steal for a place to stay!