Our family of 2 adults and 3 older children was very comfortable for our week in the Boston area. Beds, kitchen, washer/dryer, air conditioning (!), etc. all worked out great. Kitchen was fully stocked to cook a meal.
We were able to be without a car for most of the trip. The Central Square "T" is half-mile away, about 11-12 minutes walking. One you're there, you can get almost anywhere in Boston. The nearest full grocery store (a "Star Market") is also about a half-mile away. (We used InstaCart to stock up most of our groceries for the week.)
The building is on somewhat busy street. There is some street noise, even at night, especially for the corner bedroom.
Wifi & internet speeds were somewhat spotty. I hope that is something the owners can improve.

It was convenient to be able to reserve a parking spot for the couple of days that we needed a car (we rented one at the airport). Parking on the street is difficult in the area.