My partner and I spent almost a week in Paris at Camille's place. The flat looks great, it was clean, and the photos do it justice. However, the stairs are difficult to climb, regardless of the size of your baggage, because these are very narrow. Otherwise, we had no problem with going up the stairs each day, even after a long day walking through the city.
The building is quite old, meaning that it is easy for the neighbors to hear you. We were having a good time inside the flat, listening to music, talking and laughing, while it was raining outside, and got a complaint from the guy living downstairs. We totally understood, but it's something to keep in mind for the next visitor, just so everyone feels fine.
We had everything we needed in terms of amenities and the kitchen is fully equipped. Small issue with the WiFi, but nothing unmanageable. Camille helped us out.
There is also a small shop nearby so it was easy to buy some food. In addition, the location is really great, in walking distance from all the good and nice places in Paris, and a lot of possibilities for public transportation.
All in all, I recommend Camille's place! We really had the best time in Paris, and the accommodation definitely completed it.