Overall a great stay. The apartment is very well kept and we received it in a very clean condition. Kitchen appliances as well as the bathroom are updated even though the building is really old, (as most are in Boston).
The host provided clear instructions for check-in, and everything was very smooth, we did not have any issues.
As stated in some previous reviews, some noise can be heard from the street since it is located in Downtown. If you are very sensitive to some sporadic noise then I would stay away from Downtown altogether. If not, the earbuds provided by the host or some light sleeping music will do the trick.
I do recommend staying in this location since it's a very short walk from pretty much anywhere.