Please see – Italy- Eco House For Sale
New Solar Eco Village- Green Living Near Assisi – A Great Opportunity

http://www.jacopofo.com/alcatraz-solar-eco-villagge-english?gclid=CID8p9uxla4CFUcTfAodvx5aJw

a detail:

Underfloor heating enables you to cover a wide area. Unlike traditional radiators, where water needs to be warmed up to 60/70 degrees, here you can keep it under 45 °C and save quite a lot of money.