There are a lot of vampires in romance, and most of them are not gothic. The difference is worth knowing, because it tells you what kind of book you are picking up.
Gothic is a mood, not a monster
A vampire makes a book paranormal. What makes it gothic is older than vampires: a house with a history, a secret kept too long, a heroine who arrives as an outsider and slowly understands that the danger and the desire are the same thing. Gothic romance runs on atmosphere and dread and the weight of the past — the vampire is just the most honest way to put four hundred years of the past in the room with you.
The past is a character
In a gothic story the setting remembers things the characters would rather forget. The Bloodbound Houses is built on that: a lie told in 1326 that is still shaping who lives and who is allowed to love whom in the present day. The dead are not background. They are the plot.
Slow burn is the point
Gothic romance is patient on purpose. The tension is supposed to accumulate — a look, a withheld truth, a door that should not be opened. When the turn finally comes it means something, because the book made you wait for it and made the waiting the pleasure.
If that is what you are looking for
If you love Anne Rice's atmosphere, the ache of a slow-burn, and a love story that is also an argument about the past, the Bloodbound Houses was written for you.