Like Frank J. Fleming, whom I follow on Twitter, I did like this, from Nicholas Kaufmann:
My apologies to the Goodreads reviewer who found my novel about vampires on a submarine “unrealistic.”
Yes. When writing about vampires, it’s important to write realistically. Most of us have not encountered any vampires in the course of our lives, and we might get the wrong idea about them.
It should go without saying but I will say it anyway. Any comments from commenters who have had direct experience of vampires would be particularly welcome.