Cem's place is in a fantastic part of Paris and he is a very communicative and helpful host. Since it is his place, I cannot imagine having a more authentic stay. Be advised that there are some stairs to the apartment even if you take the lift and the apartment is very small (from a midwestern American perspective) so it is probably best for partners or close friends. My wife and I really appreciated the balcony and the many businesses nearby such as the boulangerie just left of the door and the bar directly below the apartment (several floors down) that was very nice. There are several Metro lines and bus routes within a few minutes' walk. This is an excellent place to stay for those who are interested in sightseeing!