Marie's house is located in Dorchester, a peripheral neighborhood of Boston. I mainly chose it for its position, and I cannot complain about it: very walking-distance from the Red Line (Fields Corner) and from the commuter rail (Four Corners). I spent there 4 weeks and I have to say room wasn't that bad: very large, with a pretty comfortable bed (despite filled with air).
However, I really found that my staying was much worst than I expected, partly because of the cleanliness: let's be clear - I didn't expect a realm, but neither dust, dirt and webs all over the house. I had to spend much money to get all the cleaning stuff needed, because the host didn't provide me with that. Also, I couldn't even be able to cook, because the pans were in such a very bad condition that I didn't even tried and I didn't want to spend more money on those.
Also, I discovered that my flatmate had some contagious health issues, and I felt the environment was not safe at all for me so, since I didn't want to loose my money, I spent the rest of the time in my own space, trying to use house the lesser I could, because the host told me she couldn't do anything because of the privacy.
The Wifi worked with interruptions. Moreover, I was told at the beginning that I would have had new towels and bedsheets at the end of my second week, and I didn't receive them till the 4th week, and only because I pushed for them.