It was an amazing experience to stay in Kahl's apartment. It is the place to be in Paris - near some of the most known turistic places; supermarket, boulangeries and cafes by walking distance; very close to 2 tube stations.
Kahl was very kindly receiving me and gave me some important advices, places to go, etc... He had to travel, but always mainteined contact with me, checking if everything was ok.
Plus: you have a private toilet, that is very convenient!