The flat was pretty clean some part which were a bit tired and could be replaced. The main point for this flat is the door: it is very difficult to open it, and if Natalia does not put a bit of oil inside it, be ready to use your forearm and hand strength to open the door. More generally, the flat is really well located, pretty clean and comfortable, although noisy.
In general, it is a nice place to spend a few days at 1 min from the Tuileries.