We had a pleasant stay at Nikita's. Very convenient location to go either to Boston or explore Harvard and MIT campuses. Nikita is very friendly and willing to share his tips on the city (as well as gloves and blankets to keep us warm). We were not used to an airbnb host being so present, it was more of a roommate kind of atmosphere so it's a good place if that's what you're looking for :)
Only thing would be about the bathroom that was not as clean as you would expect.
Overall a very nice stay !