I had a great 3 nights at Cristian's place - the location is perfect as it's very close to the main train station, and it's an easy walk to all the areas you'd want to visit. The sofa bed is actually pretty comfortable, I found it difficult to get up in the morning... As for Cristian, he's really accomodating. On my first night I was invited to join him and his friends for a delicious home cooked dinner, followed by a game of Mollky in the square outside. I'd definitely recommend this place if you're popping into Lyon.