So, for the second time around with instant booking, we have a guest coming in the same day a guest is leaving, even though we have specified a 2-night space buffer in between guests. The first time this happened, we quit instant booking. We thought we'd give it another try, but, the same thing is happening. This overlap gives us 3 hours to get the house ready for the next guest. If we had nothing else to do in our lives, this wouldn't be a problem, but we both work and need to have more time to clean up before the next guest arrives.
The biggest issue here is that we have our reservations set up with 2 days between bookings, but AirBnB is not recognizing it. We're turning off instant booking, again, until this gets resolved.