The friendliness of the owner. And the architecture of the villa.
I take a few spare clothes to travel light and the washing machine is a must for me. The problem is that it was common to all rentals, outside the villa. It was so cold that I didn't have the courage to turn it around, monitor the washing time and go get wet laundry (I hadn't brought a bag). Furthermore, the cycle cost 3 euros and I didn't have any cash on me. But we'll get over it :)