Better stay away from Heiligenblut. I had bad experiences there. When I came back to my car from climbing in that area, someone attacked me. First he let the dog on me. When I wanted to escape, he did not let me go. He was standing in front of my car when I wanted to drive away. Then he opened the door and tried to pull me out. I almost managed to escape from him. It was a terrible experience. God knows what he wanted to do to me!
You are better, going somewhere else. There are many other beautiful places in Austria and elsewhere, where people are more friendly to tourists.