I enjoyed it quite a lot!
Spoiler alert. Do not read past this ---------------------------
I thought the film truly captured the original vision. It is my belief that almost every aspect of the film echoed the time, style, and themes of "Nosferatu." Which, in my mind, might have opened the work to some criticism.
I am no Karen, nor do I jog under the banner of political correctness. You folks mostly know me. Yet, in my opinion, the film echoed the nineteenth century's attitudes toward women slightly too well. Yes! to capturing that time on film accurately. Perhaps? No? to actually echoing the logic in the film somewhat. It seemed to me (just from 1 viewing, YMMV) that it could be that Ellen Hutter's "coming of age" was the cause of this evil released into the world. And from the film's themes that could easily be taken to mean her sexuality ( just blatantly itself, and also it's threat to male patriarchy ) was to blame for her reaching out to ... something not good.
Also, I found the final act treatment quite good, but also ... wanting. It would have been better (in my mind) if it was more explicitly stated how the final trap was sprung and that Ellen knew exactly what she was doing and the cost. It worked, but in my mind it could have been tuned to quite a better pitch for much more resonance.
These are my thoughts only. I have not read any reviews and have only watched the piece once. So far...