Well cute vampire anime has been around for a long time. It was at one time kind of a niche genre, though. You have shows like Vampire Dormitory and of course, stuff everyone knows like Rosario + Vampire.
But I like some of the lesser-known series, or as far as I know they are lesser-known anyhow.
little-known ones like Karin, Vampire in the Garden, Dance in the Vampire Bund, The Vexations of a Shut-In Vampire Princess, Irina: The Vampire Cosmonaut, and Ms. Vampire Who Lives in My Neighborhood which is super adorable.
Because I've read a little bit of a manga called Otaku Vampire's Love Bite recently, and now I feel like I'm seeing similar stuff popping up.