I stayed with 3 friends in Marie's apartment and we had absolutely a wonderful time. The apartment is very modern and easy to reach from the metro station 'Voltaire' which gives you also easy access to explore the city. The neighbourhood is great and alive, supermarkets, bakeries, wine boutiques, and bistros are around the corner! The famous 'père Lachaise cemetery is a 10-minute walk away and definitely worth visiting!. The apartment is spacious enough for 4 people to stay (by Parisian standards) and has all the modern facilities one needs for a city stay. The bunk was quite comfortable and included an actual mattress which was nice. The kitchen was well equipped (with a Nespresso coffee machine) and the bathroom was also fine. One side note: if you are a person of taller size, the beds can be quite small. We were with four young adults (women) and for us it was perfect but I can imagine if you are taller, the beds are too small.
I chose this apartment mainly because of its central location: we visited Disneyland Paris for two days and it was easy to travel there from this apartment. Within 50 minutes you were at the Disneyland station. Besides this, it only took us around 20 minutes to travel to the center of Paris (st. Paul metro station) so the location is perfect!
The contact with Marie was great and smooth. She responded very quickly and was helpful with any questions I had.
I would definitely recommend anyone (who is not too tall) to stay in this apartment mostly because of its great location and price!