Saw it yesterday for the first time, a curious coincidence as it takes place during a New Year's Eve, and loved it. Don't know about the influence on Bergman, but I can see it being an influence on Vampyr, for example.
I found it ahead of its time, as most films from that era tend to be quite basic, and this one includes several flashbacks and has a very well structured narrative. I was afraid it would become a little boring, because of its +100mns running time, but that never happened.
Besides that, there are the "special effects", which still look efective today, very nightmare-ish.
Basically, 2 thumbs up from me
