Marios airbnb is the best in Syros! It is only a 5 or 6 minute walk from the ferry and from shops and restaurants. He was very fast to communicate and recommended me some good restaurants and sights to see during my stay. He also let me keep my luggage in the room past check-out time till my ferry came in the early afternoon. This room was very clean, comfortable, private, away from most traffic and had fast reliable WIFI. I would definitely stay here again if I was in Syros!!!