Mathilde was incredibly nice and communication was extremely fluid throughout.
The apartment was very nice in general, but there are a few things to be considered before going:
1) Lack of ventilation, there are NO windows, the only possible ventilation is the front door, which is something generally important and specially now with COVID.
2) The electricity went out about once a day or once every 2 days, even when we had nothing on or anything plugged in. It was fixed in a matter of seconds, but still it was a bit frustrating.
3) The wifi (although fast) was extremely unrealiable, it was constantly loosing internet connectivity.
4) The cleaning wasn't very thorough, I understand it isn't a hotel but not all towels were cleaned when we got there and the apartment smelled like it hadn't been properly ventilated.
5) There are no actual closets, every room has about 15 hangers to put your clothes.
Again, most of these problems were solved because of Mathilde rapid and fluid communication and understanding. She was very very nice and helped with any problem we had.
On the pros side:
1) The Metro line 11 was right there, a 20 second walk front the apartment, this was extremely helpful.
2) Many many restaurants close by. The apartment is between the Chinese/Vietnamese district and the Arab one, so there's plenty of good and cheap food around.
3) Carrefour close by as well, affordable food. (There's also a convenience store right next to the apartment in case of urgent needs like eggs at 1 am, it is more expensive though)
4) We were 6, every one of us had a double bed, they are very big. We never had space problems.
5) Overall nice apartment and good experience.