I stayed in the apartment for 3 nights. It is small (very high ceilings) but this is clearly mentioned in the description and it is Paris ;). For one/two persons perfect. Ideal location close to metro station line number 7 which will take you to all main touristic points of the city (Louvre, Opera, Galleries Lafayette).
There was no issue with getting the keys (your key provider will text you 2-3 days before to make sure nothing has changed at your site and so that you will have his phone number which super useful) and the all details regarding usage of the apartment were very clear.
It is situated on the ground floor with a view on peaceful courtyard. Very quite place in a noisy and busy Paris but be careful - you can hear neighbours talking upstairs (also rented apartment for tourists). For me this was not a problem and it was only for a moment but if you are sensitive for noises it may be an issue for you.
It is clean (sterile bathroom ;)), well maintained, modern.
The bed for me was very comfortable.
For me a place to stay next time.