Célia's apartment is great. I stayed for two months whilst studying nearby, and it had everything I needed for a longer trip, and was very spacious for one guest. The kitchen had most of the essentials, wifi was strong, lots of storage space. It's set back from the street through a courtyard, so you don't hear any noise from outside.
The neighbourhood feels safe and quiet, but within five minutes of the river with lively bars, cafes, and an open-air food market on weekends. I didn't need to use public transport for the entire trip as everything in Lyon was within a 25 minute walk.
Célia was helpful whenever I had questions, and accommodating with check-in and check-out requests.
I would definitely recommend this apartment for a solo traveller on a short or long-term trip!