Matthieu was super helpful and nice - from the flexible check-in to the precise description how to enter the apartment to asking how our stay was after.
The apartment is at a great location with lot's of restaurants and bars near by as well as close to the metro station. It is just as described and very clean.
The only not perfect thing about our stay was that the heating was not on in the apartment when we arrived. But thanks to description given by Mathieu on how to operate the heating system beforehand, we could easily fix that.