My stay at Sonia's place was very nice, the apartment is very nice and cute, perfect for a couple.
The location is very convenient to explore central Paris and to go the airport by RER.
The only downside of the place is that it is in the 6th floor and there is no elevator, so I had to really think twice before going out of the apartment to buy something or do something, as the stairs are a killer.
Sonia was very responsive and helpful all the time, very good host.
Good place in general.