Catherine's apartment is in the perfect location! We were able to walk just about everywhere, and there are tons of great restaurants, shops, and bakeries nearby. Catherine was out of town when we visited, but she sent us pertinent information ahead of time and quickly responded to all our inquiries. Mme Helle greeted us when we arrived, and although we could not communicate well with each other (I don't speak French), check-in was easy. The building itself is very secure and the apartment is as pictured. I found the thin mattress a bit uncomfortable, but it was fine for a week. There was also a hot water issue when we visited- there was just enough hot water for one quick shower- but the two of us staying were able to manage. I emailed Catherine to inform her about the water and she was very apologetic. Overall, we were pleased with our stay!