Our experience in this penthouse was phenomenal. We enjoyed the neighborhood dining and market options as well as the overall feel of the building. It was secure with security features at the building entrance and in the penthouse its self. The penthouse was well equipped with all the things that we needed for a perfect vacation. The kitchen being right off of the terrace provided a nice spot for us to cook and serve dinner and we really enjoyed that. the location of the penthouse is ideal especially for families, because it is in a quiet residential area but don't be confused, there are still plenty of market and dining options within a walking distance. in addition the garden of exclamation is very close and was a favorite feature of our 5 & 7 year old. overall, our experience with Guy and Dorine was very positive. Guy was ready and available to answer any and all questions that we had. The penthouse, while it technically does not have a Paris address, is located within a five to ten minute walk from the number 1 line at the Porta Maillout stop. What I'm trying to say is that the address is really a technicality and should not impact your booking for your concern about the penthouse. The town that it is located in is a very upscale and safe area. Perhaps even safer than a lot of areas in Paris proper. My husband really raved about the location the ebture 8 days we were there. Overall, our experience was very positive.