The apartment: Stylish, super well laid out, great shower, large comfy bed and QUIET (so rare in Paris).
Antoine: Really friendly, flexible, fast to respond - a superb host.
Hubert, the cat: I saved the best to last. Hubert is the cutest cat in Paris. He likes lots of attention, scratches behind the ears and it is important that he hunts all the hairbands and gathers them into one place every day (you need to distribute them - this is your job).