Booking at a place having cancer need to sleep most of the time Airbnb confirm I can only book in at 15:00 so I sit around the whole day feel tired and unwell

Booking at a place having cancer need to sleep most of the time Airbnb confirm I can only book in at 15:00 so I sit around the whole day feel tired and unwell. At 15:00 I booked in and one day later they send notification I must remember to booked out by 10 Monday morning. So in reality I paid for 2 days but did not stay for the entire two days. Too much rules and regulations upset the guests and they take it out on the host.