We didn't meet Adam but that was not a problem. The apartment was perfect as was the location. I had been to Boston before so I had a very good idea where the apartment would be and was not disappointed.
The only issue is that the apartment is in a walk-up - fourth floor. Not a problem for most but it did impact on the amount of luggage we brought - we were only there for 4 days so not a big issue. First time with airbnb and will certainly use again.