Just a brilliant host and a great person to have a conversation with!
Matthieu's extremely helpful and will give you tips on how to approach visiting Paris. Apart from that, he's fun to talk to and has a brilliant music collection that gives the apartment a positive vibe. He even went out of the way to invite me to his friends get together.
Apart from that, the apartment is great (spacious, well equipped and clean) and the locality around is nice and well connected.
All in all, it's one great AirBnb experience!