The apartments are in a very good location, close to Imerovigli's restaurants and the stunning view of the sunset the caldera cliffs near Imerovigli offer. You can also walk along the caldera cliffs to Thera in about 40min with very nice views. There is a road just outside which can have heavier traffic sometimes, but this was not an issue for us.
The apartment was clean and has a terrace with great (Eastern) sea views. The breakfast in the morning was varied, large and very tasty.
Nikolas and his mother are great hosts who made us feel very welcome, recommended good places to go for dinner, helped us plan what to do around the island and organised activities and transport for us.
I would fully recommend the apartment if you want to explore Santorini.