The location of this apartment is fantastic, not only because you can walk to some places like the Louvre museum, but also because the station Chatelet-Les halles is just 2 minutes from the apartment, and there you have easy connections to almost every place in Paris.
Apart from the location, the host (Julien) is pleasant and the house is well equipped. WiFi works superb.
As caveats, the bathroom is small, specially the shower, and there was old recipients in some parts of the kitchen. Also, bed pillows should be replaced.