One can judge a host on the quality of the accommodation and the related attitudes of the host during the stay. I also judge the host on his capacity to respond to the unexpected. For weird reasons, Yankel and I found there was already somebody in the apartment when I arrived! And neither him or I had expected that of course! What I really appreciated was the speed and efficiency Yankel reacted to solve the issue: within 1 hour time, he had arranged and paid a nice little hotel room next door for the night until he could put me back to the apartment the next night, as well as reimbursing me part of the AIrB&B night. It is therefore important to mention that not only Yankel's apartment is nice and very well situated, but also that you can be sure whatever the unexpected (and it can ALWAYS happen), Yankel will find a solution quickly and efficiently. That attitude is quite reinsuring when arriving in an unknown town. I would definitely love to stay again at Yankel's place for my next professional stays in Paris! Merci Yankel!