Giannis was so warm, friendly and helpful over email, giving us info on the area, the cave, restaurant choices and booking us cabs. He couldn't have done more, it is just a shame we didn't get to meet him.
We absolutely loved Hector Cave... Perfect location- the view is outstanding, immaculately clean, good size, comfortable bed, wifi worked really well, all the facilities you could need really. Didn't want to leave. The only down side is that the balcony isn't very private, although it didn't bother us.
Oia is gorgeous, if very touristy, don't try and walk from one side of the strip to the other just after sunset.
All in all, a perfect Airbnb experience. Thanks Giannis!