We had a fantastic time in Santorini, and Helen's place in Karterados village was the perfect base. The apartment was very comfortable and well equipped, with basic cooking facilities and a beautiful view from the balcony. It was private and quiet, and Helen was really hospitable and helpful, as was her daughter.
Karterados is a really gorgeous village with lots of character, much more laid back than Fira, which is only 15 minutes walk away. The bus stop is close by, and there are car and bike rental shops in the village. The free transfers to and from the port were a great service.
We loved our stay at Helen's and unreservedly recommend it to anyone who wants to experience a very special part of Santorini.