Be aware that some apartments have air con inclusive and other not. For the apartment 5 is an extra cost of 15 € daily. In this case be aware that the owner will check in your absence if you leave the air con running. If you do, the owner will enter the room and will turn it off.
Remove any sun oil before entering the swimming pool and wash yourself with soap.
Don’t let the curtains open during the night. It could fade the colors in the apartment. I suppose the owner will check it also during your sleep.
You get the chance to receive a second education: The owner will treat you like a child and will tell you how you do everything right.
You have also the right to hear all claims and problems from the owner even if you don’t care and need holiday.