It's exactly same as Olivier described :) I'm mostly out so didn't have many chances to interact with him yet every time I see him he welcomes me and greets me very nicely. The location of the place is in the middle of the Marais quartier and Olivier also gave me a paper that contains all the useful info in :). Easier to get to any place by train since both (St. Paul and Bastille) metro station are nearby. This is my 3rd time visit to Paris and if I come again, I'll definitely come back to Olivier's place if it's available =]. Merci bq pour tout!