The location is PERFECT, beautiful area, you feel like a resident rather than a tourist. The metro station is only 6 min away (walking), surrounded by cafes, shops and bakeries. Extremely safe.
The metro Line 1 connects you easily everywhere. If you like to walk you can reach the river in less than 30 min.
Paul the concierge was available for any need either in loco or via phone.
My only watch out for the apartment is the room on the upper floor. I stayed there very comfortably but the bathroom area and bedroom area are connected and I would have felt uncomfortable had I had to share it with another guest. But this might not be a concern for everyone