Our family (2 adults and 2 adult children) thoroughly enjoyed our time in Janine's apartment. The apartment was spacious, clean, and quiet. It had been updated recently, so it had modern amenities, but at the same time it had the charm that one would expect in an historic building. Importantly, the heat and hot water worked very well, which was helpful to us as it was chilly in Paris during our stay. The elevator was also a big bonus when we returned to the apartment after a day walking around Paris.
Our host was wonderful. She was able to accommodate our early arrival, and a friend of hers was waiting us in the apartment as we exited our cab from the airport. Our host was also promptly responsive to all of our inquiries.
The location is beyond comparison. The apartment is on a small and quiet street in the very chic Haut Marais. It has the feeling of a true Parisian neighborhood (multiple cafes a few steps away, a grade school across the street, excellent bakeries nearby, church bells within earshot). At the same time, it offers superb access to all quarters of Paris through a large Metro station several blocks away. It also has that rarest of assets in Paris, a decently-sized (and well-stocked) supermarket two blocks away.
We'll definitely plan to stay chez Janine on our next visit to Paris.