Contacted the host many times about getting check-in information. They always delayed saying they would send it later. The afternoon I was arriving I still had not heard from them. I told them I was going to book somewhere else as I was coming to Paris for the Olympics and I didn't want to risk having no where to stay. They told me no problem. I contacted booking.com days before the booking saying I was concerned. Booking.com ended up saying they would give me a refund but didn't because "I contacted them after the booking".. However, I have proof from their own customer chat, that I contacted them days before the booking.