Costas was a great host and went out of his way to make sure we had a smooth and enjoyable trip in Syros. He picked us up from the port and was always on hand to book us a taxi and help with recommendations etc.
Costas' place is a cozy apartment with everything you need with a wonderful outdoor area, with ample space for eating and relaxing. It has a wonderful view over the sea, and it's 5 minutes (although a relatively steep) walk down to a private spot on the beach which is great (although this part of the beach does have a lot of seaweed!). The apartment is about 10 minutes drive from the main town and well located to reach other beachs, although you will need a car or to rely on taxis.