We spent a week here and enjoyed every minute of it. We coordinated our arrival time with Claude, our host and a genuinely delightful man, and were met at the door by him. He cheerfully and patiently showed us the apartment and explained it's features and workings. The apartment itself was very secure and up two flights of stairs. It was immaculately clean. It had a single bedroom and a hide-a-bed couch in the living room. The kitchen had everything we required. The bathroom was large and the shower wonderful.
The apartment is located a short block walk to the Sentier Metro station. Beyond that is Rue des Petits Carreaux, a vibrant pedestrian only street with plenty of cafes, bistros, and restaurants. You will also find numerous patisseries, boulangeries, creperies, fromageries, pharmacies, and the like.
To me, this apartment is ideal for a complete Paris/French experience. It is safe, convenient to public transportation, and located in a very vibrant, very energetic neighborhood. I recommend Claude and his apartment highly.