Sofia's place is the best place we stay during our euro trip!! Sofia is responsive and her place is very clean and exactly as described.
However, I would suggest on renting a car or getting a taxi to get to her place, as it is not located in the heart of Fira. It's only an 8-minutes drive tho :-).
Will definitely stay again next time we're here! The perfect place to get some rest and to relax.