Our stay in this apartment with 6 family members was overall ok and we made the best of it.
Location is quite central and in walking distance of metro, train station (Est and Nord) and Sacré Cœur in the beautiful area Montmartre.
To put it short, the pictures of this „design apartment“ are either outdated or do not capture reality well.
There was severe mold on the walls and ceiling in the upstairs bedroom which made it impossible to sleep there. In the room right below, it also smells like mold. That is why we contacted Airbnb on the first night and tried to be relocated (but that was not possible).
For 6 persons, the size of the place was quite good, but due to the shower next to the two bed-bedroom not working (it only gives burning hot water, thus no one showered there), we needed to all use one bathroom. Even with family, that was not very comfortable. Also, the kitchen sink is dripping. These things should urgently be fixed and we communicated this to the host.
Apart from this, the place was quite comfortable and the location also central, checkin and checkout worked well and the directions by the host given clear. The kitchen equipment was overall very limited even to eat with 6 persons, also considering that this place shall be for a maximum of 10 people. There was not even enough cups or glasses for 6.
For Paris the price is ok, but the maintenance aspects should really be fixed before renting this place to anyone else.