Fabulous apartment, perfect location, super-welcoming hosts! We loved our stay in this place, which is centuries old but beautifully modernized. The exposed stonework - especially the vaulting in the lower level - is spectacular. The main suite, with a bedroom and wonderful bathtub, is quite special, and the second bathroom has a great shower. There are wonderful bakeries and restaurants within a few hundred yards, and the Seine - and Notre Dame - are a two-minute walk from the door. We've stayed in a lot of AirBnBs, and this might be the best!