The villa where they filmed Christiano Berti's home is on the market
The house formerly(?) of architect Sandro Petti is listed (or was recently listed) for €1.4 million (that's almost $2 million). 5 bedrooms, 5 bathrooms, 5 floors, 850 sqm, with 2,850 sqm lot. Built 1973.
You can see the layout of the property on Google maps satellite view, with the same pool from the film.