We loved our stay at White Utopia, great views from the hot tub, very clean inside and only a 10 minute (very scenic) walk up to Imerovigli.
We arrived to a bottle of Santorini wine, some local snacks and a bottle of water in the fridge - this was a nice touch. Antonios also booked us our transfer from the airport.
Great location and value for money, if I were to return to Santorini I wouldn't hesitate to rebook.