We have the same question- we dont that people generally will extend their stay- even for discount, they are just planned out. We do find that people love to book our place last minute, so that if we could open up the two day “left over day” slots we could fill them, but when we do that, other people book two days elsewhere where we would otherwise get three days easily. Linda, your solution is a great work around that we have used, but its hard to keep track of and easy to mess up, especially when the abnb website malfunctions and does not record changes correctly- we always have to go in and check that out edits “took”. So all that said, it seems airbnb should provide the simple option of a timeframe option for day minimums.