Lack of communication that left us on the streets! We booked the room in the afternoon because it was listed as available to enter on the ad-hoc basis, in the same day as the booking was made. We received the message from the host promising that they will be available until 21:00 to provide us the details of accomodation and instructions how to get into the room. It never happened. We tried to reach them multiple times over the course of couple of hours via WhatsApp and chat. They never responded, and neither Airbnb support was able to reach them. With help from Airbnb support we did cancel the room and got a refund. They finally answered almost 24 hours later when we were already gone out of the city. Because of that, we had to book the other room for that night. If you aren't able to support ad-hoc bookings and respond on time then probably you should not list it as available.