Conveniently located near Fira/Thira, but away from all the noise and people; there are a few shops, restaurants, and even car rentals within walking distance - including a bakery with great treats! An awesome 3-hour hike (or 20min bus ride) to the pretty town of Oia as well.
The place itself was very clean, and comfortable - we were a group of 4 (a couple plus 2 friends), and everyone could have their own space. The balcony has a lovely view of the water and countryside. Photos were accurate, shower was good, beds were comfortable, the kitchenette sufficed for our purposes. The cleaning service seems to come through daily. George was helpful and informative, telling us about different beaches and how to get there.
We definitely recommend it, and would stay there again if we ever return to Santorini (which we probably will not - too many other islands beckon!). :)