I've just had an instant booking that the guest should not have been able to make. I have it set so that one night is automatically blocked between stays - always have, since I started Airbnb. But this guest is arriving the same day that the previous guest leaves. As she is not arriving until 18:00 I can cope with it on this occasion, but it's worrying - my normal check out is 12pm, and my check in is from 2pm, so if she had been planning to arrive at 2pm I would not have had time to clean. Has anybody else experienced this? I could phone Airbnb to try to get an explanation but I expect it would be shrugged off.