Good, but not great. It overstays it's welcome. I didn't even bother watching season 3.So the Castlevania anime is good you say? It's on Netflix, right? Might check it out if it's good.
Season 1 is short and good. Season 2 is a slog at I think double the episodes. It drags on a lot. Lost interest.
But at minimum, give season 1 a shot. It's pretty good.