This was a clean single room with private bathroom on the second floor of a large house with ~7 other rooms. There are a mix of short and longer term stay residents. Ask about discounts for stays of one week or more.

My overall rating reflects the discordance between my expectations based on a cursory review of the listing and the actual conditions; likely I would have been ok with a slightly more specific description, including the unlocked main doors, unexpectedly large house with many residents, and the tax which I didn't expect to pay on site, having never done this with other airbnb stays. Perhaps most of these faults were because I didn't read the description carefully, and I got used to my surroundings over time.

Some quick notes:

Owners are polite.

The doors to the house are unlocked and open to the street; the room door locks.

The owners will require an~14% tax on the full multi-day cost for short stays as described on the listing. For $700 multi-day cost, this would be about $100 additional.

The room and bathroom were clean; shower stall.

Location is in close proximity to Central Square, within 10 minutes walk to MIT and Kendall Square.