@Leslie7 @Marie82 I just received one of these. I received it about 45 minutes before the guests arrived and I hadn't been in to turn lights on, turn AC up, check cleaners work, etc. I dashed from my office to the Airbnb to make sure it was okay and was right behind them in the driveway. They hadn't arrived yet.
In some cases I would love this feature, but not if it sends premature messages. In fact, it would be great if it sent a check in time reminder when someone tried to use it early. What I would much, much prefer is a notification that a guest has checked out early so I could notify the cleaners!