Jean-Michel is amazing. He gave us an insider tour of the area, pointing out restaurants and bakeries he recommended (and what to avoid). He even pointed us as to where major landmarks where. His hospitality was above and beyond. He always asked if we needed anything and even shared a meal with us.
His place is wonderfully clean and the location is perfect. The metro stop has escalators (you will sincerely appreciate this if you have heavy luggage) and is attached to a shopping mall. We also barely used any of our metro tickets and walked everywhere (eg. Louvre, Musee D'Orsay, Citypharma, Champs des Elysses)
If you see availability, book it.