Thanks a lot to Theo!
First of all he was answering to us very quickly. Also he wrote us a good description of direction how we can reach Paris from the airport. He met us near the station and walked us to the apartment. Theo is a host of a dream and his flat is awesome! It is situated in the perfect distance from all places of interest. Also he is very kind (asked if we needed something to eat when we arrive and wrote some places where we can eat).
Thanks a lot for his hospitality!