We didn't have the opportunity to personally meet Agathe. The apartment is very good, well located (you can walk to the Eifell tower) and two blocks from the Passy subway.
The elevator was small (two people), but functional.
When turning two water sources at the same time, there wasn't enough water.
The neighbourhood is very residential, without supermarkets/bakeries near by. In Rue de Passy, however, going up the huge stairs, you can find what you need.
Overall, it is an apartment worth staying.