It's a Vlad III origin story that only sticks to history where the titular character and maybe a few things about Mehmed are involved. No Radu, no Poenari, no Targoviste, no backstory on Vlad II and Vlad III's time as a political prisoner as a kid, no mention of his pseudonyms other than The Impaler (for chrissake just use Kakizli Bey once, ONCE!) LoS vibes or not it's already lost points for me. Make SOME effort to trump Coppola's Dracula, people, c'mon.
Also, wasn't the Master Vampire like Caligula or some such shit? I haven't seen it yet (not that I care about spoilers).