Loved Christian's place. It's in the perfect location (5 min walk to Notre Dame, 2 min walk to Place St Michel metro station where standard metro trains and the RER train to CDG are available). Christian happened to be on holiday when we arrived but he kept in close touch and his arrival intructions were extremely informative and easy to understand. There are great general info materials at the apartment, as well, regarding restaurants, bakeries, supermarkets, etc. The place was cool and interesting and surprisingly quiet given its location right in the heart of the Latin Quarter. We highly recommend Christian's place. Fun apartment and absolutely fantastic location!