I can just verify what all others already have written. Sylvian's flat is perfect for a stay in Paris - clean, spacious, with a great personal touch and located in a quiet street. The neighbourhood is exciting with lots of cafes, bars and restaurants. Sylvian's guide has many good suggestions. Take an early walk to one of the many bakeries, watch the daily parissian life, and enjoy your pain au chocolate in Sylvian's kitchen with an espresso from the machine. From the appartement you have splended connections to public communication.
Sylvian is easy to communicate with and very helpful. We were 6 persons, 2 adults and 4 children and that worked just fine.