The apartment is great! It's perfectly located, we were just in the heart of Paris. Despite the numerous bars and restaurants close by the apartment is very quiet.
We arrived late, like 2AM, and Sebastien was waiting patiently to meet us. It was so nice of him to give us a complimentary bottle of wine.
We enjoyed our stay very much and if I'm in Paris again I would definitely stay again in Sebastien's apartment.