Incredible location. A short walk to Boston Commons and the Park Street T stop, which is conveniently on both the red and green lines. We were there 2 nights, and the unit was a great home base to explore Boston.
The building itself (lobby, hallways, elevators) is strangely worn, but the unit itself was lovely - clean, comfortable. A few minor quirks (e.g., no ledge for soap in the shower), and the walls were thin (we could clearly hear neighbors one evening in the living room - bedrooms were very quiet), but overall a very nice unit.
The owners were very responsive and helpful, including providing an option for luggage storage before check-in.
Our favorite meal was at Bootleg Special - an unassuming, out of the way, speakeasy-type place with incredible food and a cool vibe.