The place is cozy, well located, in a quite area, not much night life nearby. But one should know that cannot stand everywhere in the flat (low ceiling in some parts), that the bathroom is of exclusive use but outside the flat and that it is on the 4th floors with no lift. It was not a problem for me and my wife; we would repeat the experience.
The windows provide nice views (from the bed the view is the Eiffel Tower!!), but with no curtains. Therefore we used masks to sleep otherwise we would wake up too early because of sun light.
Wi-Fi was very good.
Although we did not meet Nicolas he was very helpful by WhatsApp.