Just returned from a 2 week stay at the Beltsios Apartments, and loved it!! We were victims of the overbooking at Thanos, and were booked into Beltsios. Have to say, after looking at the Thanos whilst we were there, we feel we had a lucky escape! Cosmos' overbooking error was certainly to our advantage. (The pool at Thanos looked manky, closed in, and more like a school swimming pool).
Beltsios apartments were very clean and tidy with lovely garden area and plenty of space around the pool. Well equipped kitchenette with a mini oven and grill. The apartments are family run, and were very friendly and courteous. I managed to break my ankle on the second week, the owners were very kind, supportive and concerned. Tina particularly was extremely helpful. Good location with Troulos beach and Bus Stop 20 at the end of the road. Loads of decent tavernas in Troulous - Green Meadow done special offer menu consisting of Salad, Tzatziki, main course and wine all for 10 euros and very nice too. Ratatoille was wonderful - lemon chicken to die for. Lovely service at Salt and Pepper (recently opened, so every lovely and new). Cheaper to eat in resort than in Skiathos town. Go to Captain Nikos bar - barman very friendly. No problem for anyone who has booked these apartments, they are lovely and no one would be disappointed.