I loved this apartment, my stay was extremely enjoyable. It was conveniently close to a supermarket as well as various groceries. The closest metro station is only a few hundred meters away, which makes it easy to get around anywhere in Paris. The Eiffel Tower is only a 6 min walk away, so its nice to walk over there for a picnic at Champ de Mars.
The apartment is small, but is cosy for 1-2 people. The design of the apartment makes the best use of its space. Just be aware, there are no lifts, and it is located on the 4th floor. So make sure your luggage isn't too heavy to lift up and down to the apartment. And since it is on a higher level, it gets heaps of natural sunlight.
Gwenael was a great host, responded to messages quickly and made organising the stay convenient and efficient.