Michael & Popi live right next to the apartment and they were super hospitable, treating us to the most delicious home-made kataifi when we arrived.
They speak very little English, but that didn't stop them at all at making us feel very welcome!
We recommend getting a quad bike, it was very convenient to get around the island with (we also went to non-service sulfur mine with it, no problem). The street to the AirBnB is quite narrow, I would not want to have to squeeze through it with a car. Michael took us to a rental place (Rent Moto Adamas) where we paid 30e/day (non-high-season price) for a quad bike. Make sure the helmet has no metal parts on the strap that would touch the skin, it gets very hot if left outside or in the bike's trunk-box.
The only negative: if you are a side sleeper, the bed is quite hard, you can even feel the springs. Otherwise an absolutely lovely experience!