@Alicia822
I don't know if you were staying in your country or abroad, but returning things to guests is a hassle, been there, done that.
If the guest is still in Croatia then I can pack it, go to the post office and send it to him and he will pay the postal cost at delivery. But if the guest already left the country then the postal cost has to be paid immediately and is always costs more than the item itself.
If the guest insists on return then I have to find out how much is the postal charge, let the guest know, he has to send me money through the resolution center, I have to find the box, paper, cord and pack the item, go to the postal office, pay, take a photo of the receipt and send him with the approximate time of arrival. It takes at least 1 hour of my time and no one ever offered to pay for my effort. So why bother?
One guest didn't want to pay for the postal charge and said his colleague, a truck driver will collect it from me. Then the colleague called me and said he will pass today but he can't enter the city with a truck and if I can meet him somewhere out of town. I had to go to Ikea anyway so I agreed. I waited for him in a parking lot for 1 hour (he was late) and then he missed the exit and stopped the truck a few hundred meters further on the highway. I had to jump in my car to go to him, stop the car on the highway where it is not allowed, cross 5 lines and jump the fence to deliver the item 😄 The police went by and we both almost got a ticket. The guest never even said thank you 😞
Now I have written in my house rules that we are not responsible for items left behind.