Interesting but not much new insight. Most intriguing of all is some news reel and other Lugosi interview footage, which alone makes it worth watching if you haven't caught this footage elsewhere on the web.
I found it irritating that the narrator refers to Frankenstein's monster as "Frankenstein," which is a pretty rookie mistake to make in a supposedly professional documentary. I also did not like the sensationalist aspect of the production, which has to do with Romanian superstitions around vampyrism. This content has nothing directly to do with Lugosi. Given how complex of a personality he was they could easily have used this time to include more insight or interviews.