This place was fantastic! I highly recommend it.
The location was definitely the #1 asset of this airbnb. The 11th arrondisement was the perfect home base, because it is still very central, but not nearly as touristy as areas closer to the river, and there are so many great local amenities (cafes, bakeries, restaurants etc.) The views from the window were gorgeous. When you arrive, it strikes you how much you are right in the heart of Paris. You could see Sacre Coeur from the kitchen. The place was very clean when we arrived, and everything was functioning well. Also a very big selling point was that it had a lift, as it is one the 6th floor (7th by North American standards).
The only real downside to this place is the beds. My friend and I were sharing the place so we switched beds half way through, and one of us was always on the pull-out couch which was not very comfortable, but we were prepared for that. The double bed in the bedroom was ok, but I'm not sure how comfortable it would be for a couple. Also there was no fan or anything so if it was warm at night and we left the windows open, we did get bitten by mosquitos.
That being said, it was excellent value, and the pros 100% out-weighed the cons.