Martin's place was wonderful! It's in the old part of Lyon, which is great for exploring. Martin was very helpful during the check-in process and personally explained how the radiant heating system worked, which was very helpful for someone who is not familiar with that.
I stayed during the week which was fairly quiet. Its a short walk (~3 min) to the metro which is convenient. While I didn't use it you will need a laptop with HDMI to use the projector (but you should be out exploring Lyon!)
WiFi was 15 - 30 Mbps which was perfect for working remotely solo even with several meetings.
I would happily stay again next time I am in Lyon.