Callia Retreat and its staff were absolutely amazing. Christo and Margarita made this stay a 5 star experience from beginning to end. They provided us details on places, restaurants, and activities that were a "must" in Santorini, and we were pleased with every recommendation. They also made every arrangement for our transfers to ferry and airport without hesitation and made this entire trip seamless and stress free. The location is PERFECT as we walked every day and night right into the heart of Fira for great bars and restaurants. My best friend and I are from the USA and this was better than what we would expect even from a top notch hotel in NYC. The overall cleanliness was tremendous, and the facility and all of its amenities were impeccably maintained. I would absolutely go back and stay at Renas Suites if I return to Santorini, and you will not be disappointed either!!! Your staff are EXCELLENT and they set the bar high for what customer service should be like!!!