I stayed at Toms place for around 3 Months when I was visiting MIT. The location is perfect to be in walking distance. Tom is actually a really nice guy. We didn't see each other a lot since I was working late but the few encounters we had were nice. The place itself is a room in the cellar of his house. For the three months I stayed it was perfectly fine. However, I would not stay there for longer since it does not have a lot of light and does not have a proper kitchen for cooking. This is no fault of Tom its just the nature of a cellar :). For AirBnb the price is OK but you can find easy way cheaper options if you look through the MIT Housing.