Great apartment, big enough for one person or a a couple. Sparkling clean, equipped with everything you need and even more. Large and very comfortable bed, big closets, very well equipped kitchen, clean and spacious bathroom. Apartment has a private heating system and you can regulate the level of the heat by yourself, which was extremely helpful during my stay as it got pretty cold in Paris.
Location is really great as it's in close proximity to the metro and you can get anywhere around the city pretty quick. There are several grocery stores nearby, not even mentioning countless bakeries and restaurants.
Receiving and returning the keys was very easy even with my limited knowledge of French (I'm pretty sure even if you don't speak French at all you can manage this 😁). The host is very responsive and helpful.
Two things you have to keep in mind though: you will need to climb a spiral steep staircase to get to the apartment, it's a great exercise, but make sure you have no medical contradictions to that. Second, the walls are thin (which is pretty common in Paris), you gonna hear the neighbors and they gonna hear you 😉
And to sum up my experience: if I ever happen to be in Paris again - I would be happy to stay in this place again.