Very nice and clean place. It is not on the edge of the Caldera but the price is not the Caldera price either. only 8 min walk to the most tourist attractions. Elias is very hospitable and gave us good recommendations. We didn't take breakfast but for extra 5 Euro it probably worth it. It was little problem to find the place but on the way back Elias drove us to the Fira bus station.
The room has a tea pot and small fridge. Note that you should use bottled water for tea in Santorini - the tap water is salty.