Christophe is a perfect host! He was very helpsome during the whole stay: met us at the first day and showed the neighborhood, pointed to bakeries and grocery stores nearby, helped with WiFi, etc.
The apartment is spacious and big enough for 4 people or a couple with a child or two. The only drawback I can remember is a quite cold floor, but it is really a minor one. The best about the flat is its location - 5 minutes to the Eiffel tower and 7-9 minutes to the Arch of Triumph, only 2 minutes to subway. Thus, it was quite easy to reach all the points of Paris we wanted to see.