The apartment is super clean. I had never been to Lyon and I didn't like the location, but you can get to the center relatively quickly. That being said, the location is super quiet at night, as well as the hosts.
During the summer it gets very hot and the rooms aren't equipped with fan – even though there is an air conditioning system in the hosts' room. It would be great to at least have a fan in the room.
The hosts are very welcoming but they don't answer whatsapp messages after the booking has been made and if they use any other communication system, they didn't mention that either. (Not much communication was neccessary in any case).
The room I had (there are two) was very comfortable for working since it had a good desk and the internet connection is really good.
If I'm ever in Lyon again, I would maybe look for a more centrally located place. But considering costs and comfort, I would definitely consider returning to Simon's place.