The view of the sunset from this hotel is excellent and it is located in a quiet area. As for our stay, for a 4-star property, with good online reviews - we were incredibly disappointed.
The staff is "friendly and helpful" on the surface, but very pushy. I asked them to make a reservation at an external restaurant for 5pm, they insisted on 5:30pm - not because the restaurant was booked - but because they thought it was better... I requested corn flakes for breakfast (a listed option), they insisted on granola... Everything we asked for, we were met with resistance for no reason and it was so odd... (another couple we met had this exact same experience).
Our room had NO hot water, no matter what time of day... (the other couple also experienced this and told the staff and they insisted they were wrong).
Next, breakfast is included, but there was a 20 euro charge to deliver it to your room, which we were not informed of until the food was delivered (note that the first hotel we stayed at in Santorini also delivered breakfast to your room, free of charge). At Esparas, the kitchen was 10 steps away from our room and yet somehow, the food was completely cold. We decided to just eat it in the restaurant the next 2 days - the breakfast was also freezing cold the next 2 days (another 2 couples we met there had the same experience as us).
The onsite "fine dining" restaurant is awful - the worst meal we ate on our entire almost 3 week honeymoon.
Overall, worst hotel experience.