This book is an easy five stars but it could be a tough read for most.
The reason that I say this is that there is a creative genius to this storytelling done via newspaper clippings and journal entries. It's extremely interesting to see the progress of both the local and larger story unfold. The difficulty of reading this story today, for the first time, is that this is the story that created all of the vampiric folklore that we know today. Of course Bram Stoker wasn't the originator of the human vampire, but he created the details of weaknesses and strengths. He created the culture of vampirism that everyone is familiar with.
So when you read through this story, you have to remember you aren't reading this in late 1800s. Then, none of this folklore existed and it was all brand new and terrifying. Today, if you are reading this origin story, but already know the basics of vampiric folklore (which I'm sure everybody does (garlic, crosses, sunlight, etc.), what is written to be suspenseful, isn't.
So if you remember that many of the fine details of suspense and revelation are already spoiled for you, you'll probably enjoy the book more than going expecting an epic.
Only one of the characters is extremely irritating to tolerate, unfortunately they're a pretty prominent character. But outside of that, the story is exciting to progress with an extremely creative system of progress.
In my opinion, the book is worth the read simply for the creative style of authorship.