Dorene's apartment and Abela beach were exactly as described. My partner and I were there midd July for eight nights and had really relaxing time.
The beach is not too crowded, the sea was perfectly blue and clean (our favourite spot was on the rocks on the right hand side) and beach taverna was serving really good food. You must taste grilled octopus with lentil puree and green salad with dried figs, walnuts with honey dressing! The beach is sandy but from the left and right side surrounded with rocks perfect for jump diving or sunbathing little bit away from the main beach. Apartmen (1) was sufficiently equipped and spotles and has large terrace with sea view. Perfect for chilling out. Local hostesses Arja was very welcoming and helpful.
Around the island bus was very handy considering that we did not have a car. You can do Syros beaches hopping or just visit Hermopolis. While you're there go for a bite to eat at Sokaki Tis Eftichias (The Alley of Happiness) authentic snack bar/ouzery frequented by locals serving small fried fish, calamari and few other warm and cold snack. Do not miss Ano Syros! All in all very nice holiday and great opportunity to explore that part of Greece.
Ana