Great area (metro, bus, Butte aux Cailles, inexpensive shops/restaurants, street markets, walk anywhere, safe, etc), extremely functional flat with more than basics provided. Also very important, Adil and Delphine were/are very serious about ensuring a good space and relations for a good stay. Emails were answered within an hour regardless of the topic. They had ideas for activities, restaurants, non-touristic activities. Their attentiveness was always responsive and never overbearing - true "customer service" without being too business. I highly recommend your meeting them and using their flat.