This place is very lovely inside. We were only there for less than 24 hours before we had to keep traveling, which Jean-Philippe told us later was by his policy for the apartment, but Nadeem (who helps Jean-philippe do the apartment) was very helpful on the phone guiding us in. The apartment is clean and tidy, with beautiful views from the 6th floor. Hilariously tiny elevator that you can take up. The area around is full of lots of touristy shops with Paris t-shirts and the like, and we didn't have much time to explore deeper but I'm sure there are lovely restaurants and cafe finds in there. Interesting place and great location. Recommend it.
Also FYI, I think He's doing only longer stays only from now on..