Its been a while since I've seen Nicolas Cage in a role, I feel, does him justice. Renfield gives Cage the opportunity to shine.
His comedic take on Dracula combined with the "very English" performance, handed in by Nicholas Hoult, makes this film work, in spite of itself.
The comedic premise behind Renfield is highly original, I'd even say, quite clever. Whats not so intelligent, however, is the handling.
The potential for comedic flair and fun is drowned, in good measure, by the over the top, often rather grotesquely visceral, blood soaked, violence. Violence that's on the cusp, of the proverbial, splatter flick.
In summary, a moderately watchable film that leaves the compelling feeling, it could have amounted to more, with subtler, less violent, treatment.