Sorry for the late comment~
Jules' apartment has a perfect location,you can walk to many interesting places.There are a lot of typical French cafes in the neighbourhood.Btw,Croissants here are very tasty^^Jule's apartment and the room for rent are both very spacious and elegent.
Jules was very kind,He helped me carry the luggage and gave me some useful suggestions about how to explore Paris in a short period !
Highly recommend!