Feng was very helpful before our stay. She wasn't in Paris when we arrived but we had good instructions. She also gave us the number of a friend in case we needed to contact her.
The apartment is small, but still you get a kitchen, bathroom, good and comfy bed (in its own floor) +++.
The apartment is in a street with a lot of traffic, so you might bring earplugs so you can sleep better, if not just close the window.
Overall a good and cosy apartment.