Boris is a great host, very friendly, attentive and responsive! ^^
We really loved the place too, it's spacious, tidy, sunny and somehow pleasant. Kitchen/living room, with view over railway, is perfect for having morning coffee or evening glass of wine :) House is quite close to several metro stations, which makes it fast and easy to get anywhere around Paris, neighborhood is very active, with lots of "boulangeries" and grocery stores open till late night.
Things that some future visitors might want to consider: 1. There are quite a lot of stairs to walk up, so unless you've a backpack, getting to 4th floor might be bit difficult. 2. toilet is really tiny :D
To conclude, we'd absolutely recommend this place especially for the price! :)