We had a good stay (see pluses below) and were surprised to learn this is like a boarding house - renting five separate rooms on three floors sharing two bathrooms; it is not a room in Gregory's primary home. This raised questions about who else was staying there and whether there would be a crush on the two bathrooms when we needed to go to the airport. Because of that, I didn't sleep as well as usual.
We didn't have any problems, and we never saw anyone else, although we could tell from the food in the fridge someone else was there. The location is good, the place spotless, very close to the metro, and just two stops to the Back Bay for great restaurants. There was ample street parking - check the signs for street cleaning days. There is a Middle-eastern restaurant next door whose kind staff helped us figure out the best place to park.
This room is on the third floor; the steep, narrow, and shallow steps could be a challenge, if you have big or heavy bags. The room is exactly as pictured. Small, clean, and functional. The beds are comfortable.