I had a great stay at Alain and Sophie's apartment. They were wonderful hosts and made me feel very welcome. The apartment is right in the centre of the city, so you can walk pretty much everywhere. It was clean and comfortable and very quiet too, as the windows face into an internal courtyard so there's no noise from the street. There are lots of great restaurants/ markets/ museums locally. Overall Lyon is a fantastic city with loads to explore; I'd recommend it in a flash!