First let me recommend DO NOT come to Paris in summer, the city in general is not prepared for the heat. Most places including restaurants and apartments do not have air conditioning. Also maximum temperatures occur at about 7 pm, and full night at about 2230.
Having that said, this apartment is no exception to the previous rule. It receives full light of the sun from 3pm until 10 pm. There is no air conditioning, only a small fan. There were days of 37 degrees Celsius where the apartment became a literal oven.
Focusing on the apartment, probably you have watched one of those tv documentaries where they show you how they manage to make a small apartment to be a fully functional one, fully equipped (except air conditioning of course lol) with lots of design details. This apartment is exactly that, as the majority of the Paris’s apartments, this is a small one. Nevertheless, everything it’s so well organised and designed that you can not believe they have all those things in a place that small (25 m2). It is full of really good taste decorations and also full of plants (which I loved). Living in an apartment like this for a few days is an experience that is worth to have. The balcony is one of the best things of the apartment, the view and the sole experience of being able to sit there is a poem. As an extra it has a grill. Also, as another plus, the all area is very quiet at night.
Location, it is 9-10 blocks from the metro stations and a 30-40’ travel in subway to the main attractions. So, it’s not near.
The host (Romaine), he is the definition of a superHost. He has kind of a plan on how to make your stay in his place as much good as possible. He didn’t have any problems with waiting for us, even when our flight got delayed. Also, he was always quickly and friendly to answer any of our questions. And a big plus here in France, he speaks fluent English.