"This is just a message to thank you for your excellent services. Our trip went fine and the accommodation at your guest house was great. Also, I wanted to thank you for guarding/handing over the documents which I originally left behind at your place. Without them it would have been very difficult for us to recover our car at Munich airport. Everyone we know is eager to hear our experience from the trip and we too are already thinking about coming back. So most probably you will hear from us again soon."