Great location if you're interested in exploring Cambridge; close to Harvard, the T, and some great restaurants and coffee shops.
Room was lovely, and having my own bathroom was worth it. The room even had it's own thermostat so I could control the temperature, which is a luxury that you don't normally get in AirBnB spaces.
The space was a bit loud at night, lots of footsteps in the house, moving items across the floor in the room above me, and people talking--if you're a light sleeper, bring ear plugs. There were also some strong smells in the house, unclear where exactly they were coming from but they weren't pleasant.
Check-in was a breeze, they met me at the door and there was a code to get in and out so no issues with keys.
If you're mainly interested in a place to crash that's close to the places you're visiting in Harvard, it's worth the stay.