Apart from the stairs (which is likely a problem difficult to avoid in Santorini); the property is well positioned to offer privacy and basic amenities away from the hub-bub of "the frenetically busy caldera side"; yet is within walking distance of the village and its amenities and restaurants etc. etc.
It has great sea views of it's own (in the upper apartments), friendly and helpful staff, and a perfect breakfast (fresh fruit, cereal, yoghurt, bread, eggs, ham, cheese, toast toppings, pastries, coffee & juices etc.)
Some of the units have a private plunge pool, and the area around the big pool could be a bit more inviting with the use of sun shades... (perhaps we weren't there when the umbrellas were up).
I'd highly recommend, especially as it has parking, if you're inclined to have your own wheels. We didn't, merely using hired transport on a needs must basis; and I believe there is also a good bus system not far away.
The neighbourhood isn't perfectly tidy, but it does afford more privacy than the caldera side.