What a lovely flat and perfect host. Jean-francois was so accommodating... He left Champagne for us to celebrate our arrival. The communication was impeccable and connecting to him to enter the flat was very easy. The flat was really special. The windows view Notre-Dame and we could hear the bells all day long - that was really really special. On Friday and Saturday nights you might hear more noise from the cafes on the street below but nothing that would cause issues. The location to walk or subway was incredible and easy -One block to Metro and around the corner to RER. The flat had great cross ventilation for those warm evenings. The bathroom is small but the owner said that he was planning on renovating that area of the flat. The flat can accommodate four people easily. The bed in the living area lowers (mechanical unit a little loud but very comfortable). Their is a separate bedroom with a huge closet and that room has a window with great view of Notre-Dame as well. We stayed for a month and enjoyed every minute. Remember that you have to climb 4 flights of stairs (incase that is an issue for you - we didn't mind) and that food and grocery stores are near by... Enjoy!