Christian is lovely. He's such a friendly guy and always happy to give any advice and tips about Paris and the neighbourhood. He also went and bought me a croissant for breakfast often too. The place is also nice and clean. I stayed for a week in Paris and enjoyed it a lot. It was nice having my own space to return to (and very nice when I came down with a fever during the trip). The apartment is not in the centre of town but I would take only a 20 minute Velib bike ride or a short subway trip to be smack bang in the centre. It was a very quiet neighbourhood and I felt safe walking around at night. I'd recommend staying with Christian.