Yes, thanks.
I guess twitter is a good way to get help. I was told I was required to accept them - despite the rules. It's worrying. The two people are not either of the people on the messages. And - yes they do this a lot - quite specifically a very bad review mentioned one of the two people who checked in as having been smoking, messy, etc.
I phoned up the Airbnb and got this email: "I also just wanted to confirm that your reservation with Ste%hanie for Ce^ine has been listed as Business Travel. That being said, the third-party booking is accepted by Airbnb and the company becomes liable".
I had emailed Airbnb as well and they said:
"It is correct that this is a business booking and Ste%hanie is verified as a business traveller with Airbnb as well.
I agree that Ste%hanie should have possibly made it a bit clearer at the time of booking whether she is joining the group guests or not. You have every right to ask Ste%hanie for the full names of the guests and also a telephone number of at least one of them so you can call (if you would like to) to check their time of arrival.
When they arrive, just ask them to confirm the name of the company they are working for and show you the booking confirmation that they received from Ste%hanie. They should be able to provide this for you."
It is in my house rules that only the named guest may received the key. But - these people have never read the house rules. It's worrying. Airbnb did not help.