Thanks for identifyng the property. I have an upcoming stay at one of the other Domes properties and think I've seen another thread about pool heating at one of their properties, although I believe it was focused on the plunge pool and the idea that they wanted 100 euro a day to heat it. That's very disappointing considering the price of this property. Unfortunately, while you would think the Greek economy would make them value tourism, I haven't found that to be the case.
If you've written the property and they haven't responded, I'd go with TripAdvisor.