This place is highly recommended!
We stayed here 3 adults, each in a separate bedroom (a nice double bed in each room).
It looks exactly like the photos, super clean, great WIFI, there was always warm water in the shower, the heating was good also.
Fully equipped kitchen (although we didn't use it that much).
The host was very responsive. Make sure to ask for the code to the street door during your check-in. We forgot, but got it pretty quickly from the host via text message.
Concord metro station is really close (2-3 min walk), from there we got to almost everywhere you needed.
Super market is also nearby (monoprix, 5 min walk). The street was quiet most of the day, and felt very safe as well. Lots of bars and restaurants are nearby as well.
All in all - excellent place to stay in Paris. Will definitely come back here!