Stunning apartment and super friendly, responsive hosts! It has everything you might need during your stay. We rented the apartment in the end of February, and it was quite cold inside, but I suppose it is like this in any apartment in Paris at this time of the year. There also was a heater, so we did not freeze much. I would only recommend you to take the slippers with you if you are coming in winter, as the floor is cold.
Otherwise, 10/10