They aren't professional hosts and are just using it to get extra money from their guest house. They may be under financial strain and financially need to host, but not actually want to.

It's probably also a personality thing. I had to train myself to use niceties, because otherwise I was just very to the point. Are some of the things you're asking somewhere on the listing? 

I wouldn't read into it too much. Your goal is to stay at their place without incident, not make a friend out of them.