A truly fantastic place on Île de la Cité. The view is hard to beat in a city full of great views. Unlike a lot of other Airbnb properties, this one isn't some rental property. You are being invited into Pierre's home, not a hotel. The building is old, that's part of the charm. The floors squeak when you walk on them, that's part of the charm. There's five flights of stairs, that's part of the view. It is very spacious, at least for two people. Never had an issue with any facet of our trip.
Pierre is thoughtful in getting you to his place and to the sights on your agenda. There are several restaurants and shops of interest very close by, and of course the star is Notre-Dame just a street away. Three Metro stops within about equal walking distance. A great picnic spot of Place Louis-Aragon which is front and center of your view.
The bed is comfortable if you like your beds on the firmer side. You will hear sirens being next to both police and hospital, but even leaving a window partially open at night wasn't an issue. The only negative I can find is that I kept hitting my head in the water closet on the light. Would love to come back again.