This was our very first AirB&B. We really enjoyed the location of the unit, as it was within walking distance to the Metro (5 min), Le Louvre (15 min), Musee d' Orsay (11 min), and a few good restaurants. Although other sites (Eiffel Tower, The Pompidou, Notre Dame) are accessible via the metro, we opted for Uber out of convenience (8-10 euros one-way). The unit is located on a main street, however, because we are used to sleeping through traffic noise, it wasn't a bother, nor was it ever too loud. Also, the fresh tulips upon entry was a nice touch.
Overall, the unit was clean. However, there were a few issues that bothered us. The first being that there was a used menstrual liner in the toilet room trash can. I know it was used because it was not folded up, but open used-side facing out the trash can. The second issue is that there is a displeasing odor to the toilet room - almost like a lingering feces smell. Luckily, the toilet room was not occupied at length. To the host's credit, my wife and I are neat freaks and very particular.
Those issues aside, we made the best of our stay. Unfortunately, we will be looking else where on our next visit to Paris.