Seven, for the good times God, this guy knows how to set up a scene, how to use the actors, how to hang on to the dialog. But what he has forgotten is how to know when to say 'cut'. Visually, its fantastic. Not about the period pieces and all that but just the camerawork, the lighting, how the actors move through the scenes. But it was too much of every scene. Each could have been cut, make it tighter, less is more. I'm not gonna get into the performances, no problems there.
It was just too much of a self-congratulatory display. Seven is fair. My advice is to watch it in chunks. Step away, have a sandwich, do the dishes.. whatever. Come back to it fresh.