Christian's apartment is a perfect base for a short or long stay in Paris. I stayed for 10 days in February 2013. I arrived in a snowy Paris and was relieved that the apartment was so warm and cosy. I didn't even need heating on in bed at night.
Spread over 3 levels the apartment is very spacious and has all the basics to make yourself at home, wash, cook etc.
The location is great with multiple metro stations nearby. However I walked a lot with, for example, the Pompidou just 10 mins away.
Thanks Christian for making the apartment so comfortable!