We didn't manage to meet Zoubair but he provided all the needed info thoroughly. Check-in and check-out was done through his neighbour Emmanuelle. Between her French and my English and a lot of hand gestures, we made it work. Location very conveniently close to Gare du Nord, the main reason we stayed here. Area may not feel safe for certain people, but having said that, nothing bad happened to us. Apartment has newly added furniture, a bit cramped but still cosy. Kitchen supplies sufficient. Toilet supplies insufficient, but we had our own anyway. Overall a positive, interesting experience if you're not too picky.