I stayed at Nicolas' place for a week, for a conference. I did not have a lot of interaction with him, but everything went well. He gave me detailed instructions for the check-in, and was very responsing. The flat itself was clean and well-equipped. The location of the flat was quite convenient for me, and very easy to reach if you come from the Perrache train station. The center is a bit further away, but can still be reached in 20-25 min walk. Overall, it is a place with a good value for money, which I recommand if you need to stay in Lyon for a few days.