I booked a property through Airbnb in Budapest. I checked the whole listing for any specific requirements and duly asked the host for it. He said none. But when I reached there he asked me to provide my details (Passport number, DoB, address etc). I asked him why did he need this information and he said tax purposes and mentioned hotels do so. My main concern was with those details he can, if he wants to, impersonate myself and get me into trouble wrt credit, fraud. I did submit the details when I book in a hotel, but the hotel has a prerogative to protect it's customers and their details which affect their reputation.
My main query, are these details required by laws applicable in Hungary or the host was trying to make a mickey out of me ?