Although not on the main strip in Oia, it's worth searching out. Roka (spelled “POKA” on an occasional sign along the way) is a warm and inviting place with unpretentious paper tablecloths and napkins. Roka is a cozy, out-of-the-way restaurant that feels like dinner in a big house. A bit difficult to find but only a minute away from the main marble walk way along the border of the caldera. Seating is on the balcony or indoors and the small patio on the backyard has a beautiful sea view.
Some of the specialties include a variety of meze (Greek starters), salads, risottos and onion pies, fried cheese, thin-sliced eggplant with feta and tomato sauce, snails with tomatoes, mussels and many others.
The drinks are reasonable house wine (featuring lots of local wines), high quality bottled wines and soft drinks.
The staff make you feel like long-time friends. You shouldn't miss it if you come for the sunset to Oia.