The location is amazing; it is close to everything that you need. Sightseeing wise, it is walking distance from most of the basic monuments and it is among many trendy restaurants and cafes and bars.
It is not as easily accessible (many staircases), there is no view available and it is a bit strangely laid out.
Bruno is amazing and very eager to help, although speaking only French was a bit of an issue.
I believe that location alone makes up for the rest, but again it is not as easily accessible.