We found the apartment actually quite cool, the area was also nice too. Near Monmartre, with nice bars and restaurants...
The apartment was small but very fancy, specially very nice decoration, very tasteful.
There were two things, we didn't like. First of all and most important: when we arrived, the pillow cases and one towel were just not new, I mean they were used and had some dirt marks on it, which was if course disappointing.
The second thing was less important, but still: when we arrived, the key was in a lockbox and nobody was there to show us the room and welcome us. This is maybe a detail, but I would have found nice that there would have been someone there to show us the place.
Another important thing if you find smells important: there is a little problem of humidity in the whole building, which is in the flat no big deal apart from the bathroom, where you feel that in a more intense way.
As I said, nice apartment (by the way, great, that they have Netflix in the TV), nice location, but with some service inconveniences.