Originally Posted by
stevento
It was our body language, apparently. He said Westerners are much more open, give off much more positive vibes, whereas his Russian, Ukrainian, and Georgian guests are much more tight, more suspicious, and far less friendly.
Just repeating what I was told by someone who deals with people from all over the world on a daily basis

I agree with your AirBNB host. I'm in the same boat as you, and I tend to hide my identity a bit better as I lived in Western Europe for an extended period.
I can also spot the difference easily between ABC/CBCs and Chinese who grew up/lived in China.
I'd say a lot of it is facial expressions more so than just the body language.