The best is the location, in a quiet street next to the main central sights, all in walking distance, a bit of a walk though when taking the metro. With luggage you are better off taking a taxi/uber. On the third floor, only reachable via narrow stairs, but then again that is common in Paris. We used bed sofa and had very little space left. In our case, check-in went wrong. We did not get codes before and waited some time in front of appartment. Plus the cleaning lady had not finished at 5pm. There was no courtesy water and some coffee capsules for the machine which can be expected at this price. Positive note, we were able to stay a bit longer so we could leave luggage while making last excursions in the morning.