We stayed in the flat in December (New Year) and liked it! The flat is located near the Eiffel Tower which is great (you can walk there) and has a Metro Station across the road! There are also shops, restaurants and a Supermarket nearby - great location. The communication with Stéphane was great - he always responded very quickly, was helpful and friendly and also stayed inc ontact during our stay. He also provided a lot of tips before the actual trip.
The flat is nice and located great but please note that it is very small (as indicated and seen in the Images). It was perfectly fine for us and we also had breakfast in the one room, but maybe it is not for everyone;)