If you are looking for France in Boston, Aaron and Catherine's house will satisfy your passion for French culture. The room I stayed in was super clean. The hosts went through a lot of details with the rooms. The house has a lovely ambiance.
The only caveat, if you're a single woman traveling by yourself, check out the neighborhood ahead of time. Plan your trip well. And make sure you are using a legitimate taxi service. Know where to catch the buses and the train stations if you're using public transportation.
Most people are friendly in the neighborhood, but like in any major city, use discernment.