Pros
Comfortable space with a nice modern design
The neighborhood has some fabulous restaurants (I recommend J Jaques and Le Clocher Penche, although they are a bit of a splurge.). It's a somewhat gentrified neighborhood, but it seems pretty safe.
There are also many stores nearby, including a grocery store.
Old town is about a half-hour walk.
Suggestions for improvement
It would have been nice to have a dresser or shelves for clothes, although our living room was big enough to keep our suitcases there.
You have to get out of bed to turn off the lights in the bedroom. Bedside table lamps would be nice.
Overall, we enjoyed our stay at Les Lofts Dorchester and would stay there again.