STAY HERE. Maria’s place on Sifnos was one of the most magical places my fiancé and I experienced in our trip to Greece. The bay of Cheronissos is on the far north end of Sifnos, and a little hard to get to without a car, but very easy to rent one in the main port of Kalamares (35-40 Euros). If you’re from US/outside of EU get international drivers license, very easy to do.
Cheronissos has two AMAZING restaurants, one traditional and one more touristy taverna, but stay for two nights, try both, and try something new. restauranteurs speak very little english but make amazing meals.
Crystal clear waters, amazing local pottery shop by a colorful old timer (we had to get another bag because we bought so much!), really magical stay. Definitely recommend if you want an experience or authentic Greece!!