We had a great time at Marco's house, Marco is a very friendly and helpful person, the house had a spectacular view, and after a few rides we got used to the narrow mountain road down to the beach at Cefalu, which by the way is a very good beach. Be aware though you will need to rent a car to stay at the house.
All in all, I will recommend the house if you want to stay close to nature, Cefalu and Palermo, but if you like to be where action is every night it is not for you. If you like a beautiful terrace, sipping wine home and read a book, it’s a great place.
Also, note that the house only has one dedicated bedroom, the other “bedroom” is a living space upstairs which is fine for 1 or 2 children, but will leave no privacy for extra adults as there are no separating walls upstairs.
Internet and TV did not work particular well, but we did not need that, what was important was that the house was clean, and actually beautifully designed by Marco (I think), who is an architect.