We really enjoyed staying in the apartment. It is small but comfortable, on the first floor so it's easy to get bags in and out, and is quiet and restful after a long day in the city.
The apartment is in a great neighborhood with nice cafes and nearby shops. It's a very short walk to the Courcelles metro stop, so it's very easy to get in and out of the city. A longer (but pleasant) walk gets you to Place de l'Etoile, where you can connect with other metro lines, the Champs Elysees, and hop-on-hop-off buses.
Ariane is great - she was very helpful at check-in and offered assistance throughout our stay. She was very communicative and easy to contact.