Unfortunately we haven't met Pieere but we got all the helpful information and really friendly welcome from him^^And we were received warmly by our roommate Margarita and her cute mother, they gave us a lot of help during our stay and Margarita have even prepared some tasty Lebekuchen for us Christmas celebration.
Our room is of moderate size which is surely enough for two person. It also has a small balcony just like the picture showed. The bathroom is neat and tidy for shower, separated from toilet, that's quite considerate. And you can also cook in the kitchen but we don't need to.
Everyday we walked to the nearby metro(within 10-15min) to the attractions in Paris. The neighborhood is really nice, you can find excellent bakery and supermarkets along the street, and even a Chinese restaurant. And we didn't feel dangerous when we came back in the night because the flat is in a really safe place, there is also safety guardian in this community.