The location can’t be beat - less than 5 minutes’ walk from Notre Dame, 25 from Louvre, and metro to many other main sites. For this reason, the neighborhood at large is very busy, but the street for the Airbnb is actually very quiet and a nice respite. There are lots of markets, delis, restaurants, and bars. Because of the location, some places are VERY tourist-ey (i.e., not worth it), but Emmanuelle has recommendations in her guest book.
The apartment itself is two stories with a dining room and living room. Note that master BR is off the common areas with windows at the top of the door that let in common area light, so good communication/boundaries are necessary if some people prefer earlier bedtimes. We highly recommend!