We were 4 people staying at Sergio's house for 4 nights, and were very happy. The house is just as described and looks like the pictures; spacious, close to the sea, lovely terraces and comfortable rooms. Pozzillo is a very sleepy little town, but it's close enough to Catania to visit for instance the fish market or the great enotca Glass in Riposto. I would definitely recommend Sergio's house if you're visiting in the Etna region.