You are paying for the view & location because those are the BEST in Oía (hands down!). You are not paying for the house itself. The house is great with clean linen, a bed, toiletries, Satelite TV with 1000+ channels, amazing amenities on terrace & also provided us with snacks for breakfast.
But in terms of comfort; the house is old. So if you have expectations for a modern experience, you may have to lower it a bit. Otherwise, Family of 6 (4 adults, 2 kids) had a fantastic and memorable time in Oía!