Zapo's apartment is great -- just like in the pictures. Zapo was very responsive. We were a family of four in the apartment -- two adults and two small children. It was a little tight for four of us. Also, the downstairs neighbors did not seem happy there were four of us walking around above them. I would definitely recommend this apartment for a couple, but the space is a little more difficult with children.
The location is excellent. We were within easy walking distance of museums, bakeries, grocery stores, public transportation, etc. The apartment is right across the street from Angelina, a wonderful stop for hot chocolate. The Louvre and Musee d'Orsay are just a few blocks up the street.