There are essentially two types of Airbnb choices: the home that’s not lived in by the owner and the one that is. This is the latter: a charming five level apartment that is obviously beloved by the family. It’s part ancient and historical, and part modern; a combination of centuries-old and well-worn stone steps leading to the lower level and a grotto-like shower, a living area that features columns dating back to the 1700s, and a lovely outdoor patio that’s framed by the ancient walls of the church next door. The modern part features a small but up-to-date kitchen, lovely bathroom, large comfortable bed, and, if you’re there in the cooler months, radiant heat in the living area floor that’s a delight to your feet. (Leave your shoes at the door and the floors will stay clean for your entire stay.) You will immediately fall in love with this quiet apartment and have thoughts of moving to Paris and becoming its next tenant should the current owner ever leave. Note that there is no microwave, and the clothes washing machine is also the dryer, both very minor considerations.
I could not imagine a better location. Just a block or two from the River Seine with its charming boats, and, in the other direction, the small streets of the 4th Arrondissment with its bakery/cafés, restaurants, shops, and Parisian charms. It’s an easy walk to Notre Dame, the Louvre and other museums, and the Latin Quarter across the river, and most everything else is a metro ride and short walk away. Pay scant attention to restaurant ratings; we found that those with three stars were superior to most four star establishments in the U.S..
Note that while most restaurants have outdoor seating, it also accommodates the smokers who appear to be at least half the population. Sit inside if this bothers you where smoking is not permitted. Finally, a taxi ride to and from Orly airport (currently €35) is a mandated flat fee so get cash at an airport ATM beforehand; most cabs will not take credit cards as the processing fees eat too much into their already small margins.