The place looks exactly like the photos presented on air bnb. The location is just next to the Saint Lazare station. (30seconds by foot) It is one of the two rare metros that actually work frequently during the strike. Note that this is extremely important if you are going to visit Paris nowdays.
Everything is just fantastic about the place. There is just one little thing that could be a problem to others is that my partner felt the room was a bit cold. I did not have this issue. The radiator seemed like it turns off at some point during night. (You might want to ask Catherine about it before hand. )
Overall we had an amazing experience at this place. Thank you Catherine! Happy new year! :) Hope you are having a great time.