I stay in Paris Airbnbs usually 5 times a year and unfortunately, this flat has been my most disappointing stay to date.
The digital lock to access the flat did not work, so I used the key provided in a lockbox, however, I realized in doing so, while you're in the flat, the door remains unlocked. It does not lock automatically as the instructions indicated, and there is no way to lock the door from the inside. Not safe for single travelers as the glass paned door opens to the outside and is flimsy and not properly sealed.
The furnishings are nice, but it's not a functioning flat. Have a look at the negative reviews for this and the other apartments "Leon" hosts in the same building before making your decision.
Finally, knowing Paris, I was aware the flat was not located near Place des Vosges, but was in one of my favorite neighborhoods. I'm not sure why the host would be dishonest in the listing. This just highlights the overall lack of hospitality which I found disappointing.