Frederic's flat is exactly as described, it is very fancy, comfortable and convenient all at the same time. We had a very early arrival in Paris and although he couldn't come to give us the keys in person, he made sure that we could collect them when we arrived at his place.
Frederic texted me to check if everything was OK, to make sure that we were comfortable.
The location is at its best- only a short walk from about 3 different subway stations in the area, but I always had the pleasure to take a few steps more and walk straight to the Eiffel tower, and walk along the Seine river (the Bir-hakeim bridge is also in walking distance). And the street itself is very calm and quiet, which is great.
There is the Franprix supermarket literally in the same building as the flat, and the neighborhood is full of nice restaurants, I even had a craving for Korean food(I'm Korean) one night- that I just walked out and found a really nice Korean cuisine nearby.
I have nothing else to say about the flat itself because it is just perfect that makes you feel at home. It feels great to relax in the balcony or in the living room after a long day out. I would want to stay at Fred's flat again next time I'm in Paris.