We visited Paris for the arrival of the New Year 2019. The apartment is in the eastern part of Paris (Charonne; a former village, some parts still visible), close to a metro station, near a vibrant community with many restaurants, bakeries and butchers (rue d'Avron).
The apartment is not very large but easily slept the five of us. There is an amazing number of books and drawings (Marie-Lys' own work!). The kitchen had all we needed, supermarkets and bakeries are nearby. At night it was very quiet, we slept very well. We enjoyed feeding the birds in their cage and to hear their chirping.
The metro takes you everywhere, and if you feel like it you can walk to the center (a bit over an hour; you should try it at least once to take in the differences in the neighborhoods of Paris more slowly).
All in all a very good experience, highly recommended!