Sofia is an excellent host. She picked us up at the bus stop, took us to buy water, called a cab always when we needed one. When it was time to leave, the taxi that was supposed to take us didn't show up, so Sofia took us herself so we wouldn't miss the ferry.
The house is nice, with a balcony overlooking the sea, ideal for breakfast or an afternoon snack. There are beautiful beaches nearby, good restaurants and good hiking trails. Next time in Syros I will stay again at Sofia's place.