I simply loved staying in this tiny studio apartment! Our only difficulty was the weather. Our first two days there were in the mid-90's (F) and there was no fan to move the air around. We were so hot! But in all honesty, it seems that all Paris was similarly situated. I don't think all that many people have fans or air-conditioning. The heat made the apartment pretty uncomfortable for the first two days - we took many cold baths to cool down in the evening.
All that being said, Laure (Beatrice's friend) was so responsive and helpful - and the location cannot be beat. We loved it.