Nikolai answered very quickly to my spontaneous request (same evening). Everything went smoothly. The room is in the backyard of an amazing neighbourhood right in the center of Paris, with lots of nice bars and restaurants in the surrounding streets. The fact that the house is located in the backyard is giving you a very safe feeling regarding your belongings. The apartment itself is pretty stylish, particularly because of the interesting combination of the architecture of the house (medieval flair) and the creativity of the people living there. Nikolai and his roommates are really nice, considerate people. I enjoyed my stay and would definitely come back.