We really enjoyed our stay at Sonus Mare. It is located in a very peaceful area, meters from Vourvoulos beach, away from the crowds, yet near from main villages of Oia and Thira. If you have a vehicle to move, then this is a great stay. Very new, super clean and well equipped. Anna and Yota, provided a few basics for a continental breakfast which was a very nice touch.
There is a cafe / taverna just down the beach, which is really convenient if you feel like just going for a walk and grab some good greek food.
The jacuzzi is in perfect condition, it gets cleaned every morning and it's always ready for you to relax.
Anna and Yota, are very hospitable and helpful. Communication is great and also they can provide recommendations as of where to go and what to do.
We really enjoyed Santorini at Sonus Mare.