Just finished our 2nd stay at this apartment in 3 years. Spent 2 weeks here and as all the previous reviews, it is fantastic, and in one of the best locations.
Claude and Lucile take care of everything; all the amenities one needs, as well as endless suggestions on things to do and excellent recommendations. They even keep a 3 ring binder of activities within Paris, as well as day trips outside of Paris, with detailed instructions and directions. He also is quick with restaurant suggestions based on your tastes. Claude was also very helpful during an unplanned power outage. He was right there, looking for the cause of the outage, and corrected it immediately.
The neighborhood is also wonderful. Full of shops and restaurants, very safe, always brimming with activity. It is also a very short walk to Luxembourg Gardens. For those using the Velib bike sharing service, there is a station just a block away.