Nathalie is a great host. She is very very helpful and communicative. We used up some supplies and she brought them right away within the day.
The best thing about the apartment (other than the size, stylish-ness, security, facilities and equipment), is really the location. Just a 5 min walk to the Arc du Triomphe, 2 min walk to Champs Élysée and Franklin D Roosevelt Metro (yellow Line 1 and lime green Line 9?) which takes you to all the must-see spots in the beautiful city. A 10min walk towards the Arc Du Triomphe brings you to the RER A Red Line that you can take to Disneyland.
Around the corner, two supermarkets and countless patisseries, bistros and eateries (Asian, Italian, French, burgers, etc), bars and brasseries for dinner and drinks.
We were 4 adults, 3 kids and 1 elderly and were very comfortable at Nathalie’s apartment. The lift (albeit small) was very helpful for my mom and moving our luggage up and down the building. Just a word of caution - the apartment is a classic (vintage) Parisian apartment, so some of the floor boards are worn, and socks / feet can catch splinters easily in some parts.
All in all, we had a very pleasant experience in Paris. Price was quite steep but I guess you pay premium for the location!