The apartment was exactly as pictured and described, if not better. And the location is absolutely perfect, right in front of the Louvre.
One caveat: bring a mask if light bothers you in the morning, as there are no curtains on the big wall windows. And ask the host to explain in detail how the temperature works, as it was really hot in the bed upstairs and very cold in the sofa-bed area downstairs.
Otherwise, I would definitely recommend the apartment and would go back myself if and when I return to Paris.