More than once, I've had a guest ask to extend their stay. I have not figured out an easy way to do this. Usually, they have to begin again ( ignoring links to our old communication) and send a new request. Then I have to go in and change the cleaning fee( hard to justify two of those in only a few days). It's time- consuming and awkward I could take a check, but I prefer to do it through Airbnb and I Know. Airbnb does too!