Host is easy to communicate with and thoughtful. E.g. due to the heat in Paris, the host had left two table fans for use. Location is great. The reasons for four stars: (i) the apartment is clearly made to maximise the number of guests for airbnb rental, not the well-being of guests: it is in my view too small for four people, even for Paris standards. (ii) Door is old and there will be a lot of cold air coming in on a cold day.