@Kevin384 No, but I did have someone who stayed with me who I believe who was from Airbnb or another agency checking up, because they mentioned 4 of the things you mention above, then ended up presenting with none of them. It was a bit odd. I'm not going to get into any more specifics to preserve the person's anonymity. I'm not sure why else they would have done it (unless they were conducting their own study). They did stay and they were lovely, one of my best guests ever.
It could be Airbnb, or it could be another formal or informal study. It's happened before. Students from Harvard did it to check for bias against people of colour. I know that it's been a hot topic for Airbnb in the last couple of years, so maybe they are checking up.