To summarize, I can wholeheartedly recommend staying with Cédric. The apartment is in a very good shape and it is very easy to reach the city center of Lyon with the Subway (~8min). Besides, everything you need is there, the apartment is perfectly equipped.
Not only the apartment but also Cédric as a person is totally recommendable. There was no problem at all, I have nothing to complain about :) What makes communication for non-french speaking people easy, is that Cédric speaks very good English, so you won't have any inconvenience due to language barriers.
I am especially thankful that Cédric reacted very fast and was flexible concerning the stay. When I booked Cédric's Accommodation, I was in a quite difficult situation because the heating of another airbnb where I stayed before broke down and I needed a new apartment immediately.
Thanks a lot Cédric, if I visit Lyon again, I'll definitely return to Rue Pierre Audry !