We stayed at Bonora the second week of August. The place is comfortable, clean and simple but stylish, set within a beautiful home. The location is fantastic if you wish to avoid the more crowded Oia (10 minute walk or 2 min motorbike ride) and aren’t concerned about not having Caldera views when you look out of your window (you still have a good panoramic view of the sea and the east coast of the island).
Lamprini was a great host, helping us book a taxi from the airport and allowing us to wash some clothes while always providing recommendations and help when needed. We would definitely recommend staying here if you are looking for a place that is comfortable and relatively modern but still having a “Greek” touch.
Would only note that the shower in the bathroom is open (no curtain/glass) so you need to be a bit careful or you will spray water everywhere. It definitely wasn’t a problem for us.