As an occult player, my answer is yes. The build/buy is very victorian/goth which is also up my alley. Now if you're a fan of them vamps, you're going to enjoy the pack, they're well thought out and with the vampire perk system (and depending on your playstyle) you can have multiple vamps who are unique. Also forgotten hollow is a small but dark world, which is the only world of its kind.
I recommend searching for sims 4 vampire gameplay videos to see content creators featuring the pack, that'll give you an idea of what to expect.
It is, in my opinion, one of the best sims4 packs.