Xavier was a great host. His place is very conveniently located for all the important Paris activities but far enough from the tourism to enjoy a local feel. The Marais is a fantastic area with tons of those tiny winding streets I love. Bed was very comfortable, makes me want a new bed at home. It was also perfect for sharing with a friend without disturbing eachother's sleep. Shower was great. Xavier cooks great smelling food regularly and has a fully equipped kitchen. This was a great spot to explore Paris on the velib bikes too.
I will note that the place is not quite as fancy as the pictures suggest and the door is a little tricky to open too, so try to arrive when someone will be home in case you can't make it work. Nice and quiet at night too.