Actually, I booked a accommodation for my parents in law under my name and I have to pass the message from them. They really enjoyed where they stayed. According to their comments, the place is accurate as Olivier described and especially, Olivier and Nadia were incredibly helpful while they stayed. The area is easy to walking through out the Paris, (they only used two times metro for 5days.) and convenient for everything. If they have to pick some down side, a bit noisy at night because of central location so if someone is light sleeper, won't be happy, but they didn't have any problem after long walk and some people have already mentioned about many steps in the flat so ready for the day exercise. Overall, They were happy so,if they go back to Paris, would love to come back to Olivier's! And from me, Olivier, thank you for looking after my parents in law!!!