My wife and I stayed for 5 nights in Julien's appartment in June 2019. We were delighted to be his guests.
The place is tremendously situated within a walking distance (20-40 min max easy stroll) from the heart of Paris and most of the top attractions. There are severall supermarkets within 3-10 min walk from the apartment, including one that is open till 22:00. There are also a bunch of nice cafes around the apartment, including one with a Michelin recommendation (although a bit pricey).
The apartment itself is nice and cosy. And it had all the amenitieswe needed.
Overall we had a charming time in Paris and staying at Julien's apartment.