I stayed with the Carneys for four weeks. Everything about my stay was excellent, and I have no complaints. Here are the main points of note:
-The neighborhood is awesome. Cool location, gorgeous houses, and an incredible view of the city if you get a chance to walk up Grampian Way.
-The Savin Hill T station, on the Red Line, is about a 7 minute walk. From there, it's a roughly 12-15 minute ride to get into the city via South Station or Downtown Crossing.
-If you're like me and need a supermarket during your stay, there is a Star Market nearby that takes about 13 minutes to walk to.
-Guests have access to a full kitchen, with some staple items supplied.
-The place is absolutely spotless. The housekeeper, Cynthia, does an excellent job.
-The Carneys rent out quite a few rooms (it's a big house!), so there is pretty high turnover among guests. I never found this at all bothersome.
-Along those lines, I found that interaction with the other guests and with the Carneys themselves was fairly limited. Guest rooms are spread out across a couple different floors, and everyone seems to keep to themselves. Likewise, the Carneys have their own spaces and do not use the first-floor kitchen, living room, and bathroom that guests use.
-Speaking of the Carneys, they are excellent hosts. They are very nice and very professional, and if you have any issues, they will be happy to help.
-Barney's muffins are as good as everyone says.
Seriously, this is an excellent place to stay. I will certainly be back.