my early morning tour with Bertrand last week was wonderful. He is knowledgeable, engaging and after asking a few pertinent questions of me, took me through nearly two hours of seeing pretty much everything I had hoped to see...even though the museum opened late. I would not hesitate to recommend him to others looking for a great experience at the D'orsay, and I have no doubt that he'd be equally informative and entertaining at other sites in Paris.