We really enjoyed the space. We were greeted before our check-in time and allowed to leave our bags. The space was clean. It was located very conveniently to the Metro hub Halle's (almost like a Penn station in NYC). We could walk to Notre Dame, the Louvre as well as many other sites, restaurants​, shops etc...
If you want to cook there is a stove and microwave but no conventional oven. The are some great markets nearby for unprepared food.
The elevator worked going down but we had a little trouble using it going up for some reason. But the stairs we fine and even with a stroller and toddler we weren't that affected by this slight inconvenience.
It accomodated our family of seven very comfortably.
We would return to this address again.