My wife and I had a great 4 night stay at this modern apartment. The location was perfect for our trip - right next to several metro stops and a very short walk to the Notre Dame cathedral. Also, the apartment was more spacious than we were expecting for central Paris... it was great for the two of us, but would also accommodate a group of 3 since there is a small room with a single bed too.
Sebastien was very welcoming and even provided us with some of his local recommendations. We highly recommend staying here!