The location is really good! You have a bakery in the same street and many beautiful bistros where you can have lunch or dinner.
The appartmens is really beautiful and you feel like home. The ceiling is not so high in the "bedroom" but its not a big deal.
The mentioned noise of the metro in some comments before are in my opinion not true. You dont hear anything you just feel a really small vibration.
The check-in was really convenient and there were no problems!