Never mess with Musinidis!!!
They sold me a hotel room for more than twice its actual price. The room itself is a complete mess, all my complaints about the quality of the room were stupidly ignored, they refused to return the difference in cost. Read more about this in my review of the hotel Akti-S (Akti-S) Halkidiki, Sithonia. And don't do business with Musinidis!