Kastro Gate was one of the best places we have ever stayed. The location in the old historic gate is really unique and the space itself is amazing. Everything is so well thought out and the place was really clean and well decorated. We loved the little outside area overlooking the hillside and enjoyed being so close to the local bars and restaurants in the evening. Spiros was quick to respond to any questions and had some fantastic recommendations. You must stay here if you are going to Sifnos!!