Christophe's property is smack in the middle of Le Marais and couldn't have better proximity to everything in Paris. Notre Dame, Sienne, Louvre, Pont Neuf etc. are all at a walking distance as are many markets, beautiful shops, restaurants and two Metro stations.
The host helped us check in early during our day of arrival. He's extremely well organized, responds on time and takes into account small needs throughout a long stay - one of the most well organized and professional hosts I have come across.
The property itself is well equipped for a comfortable stay and made even nicer with touches of welcome coffee/wine/pastries. Lively atmosphere outside this building on weekends with many folks shopping or going to nearby parks.