Watch out ! They lie about the jaccuzi, hot water is only available during summer, so you mustn't expect to use the jaccuzi in winter. About customer service, it is full ZERO, if you ask about the jaccuzi they answer unkindly "If there is no sun there is no jaccuzi". Be carefull also about scams (food spots and taxis) and christmas holiday (the last 2 weeks of December), almost everything is closed in Santorini.
Otherwise, the hotel has a wonderful view and a great breakfast menu. It is very clean and well located but might be better in summer time.