I hate to leave a poor review or potentially this is common of Parisian flats.
Firstly, we didn't realize the flat would be 5 stories up with no elevator. This is not a knock to the flat, just something you should know considering some people travel with heavy suitcase (like we did) and it would be taxing going up and down multiple times in a day. Now onto the experience inside. The flat is smaller than expected. On arrival we noticed a strong sewage smell coming from both restrooms. We assumed that it was from the previous tenets so we opened the windows and doors to try and let it air out. After a few hours the smell persisted so we contacted the host. To which we were told a tech would come to try and fix it either that night or tomorrow morning. Neither of which happened so we eventually asked for a refund and switched Airbnb's. I will add that the host tried to deny that there was knowledge of a smell which should be false considering there is another review stating the smell.