While the portico is undoubtedly by the hand of Palladio himself, the position of the windows is at variance with the architect's own advice in I quattro libri dell'architettura, where he warns against placing windows near the corner of a building lest it weaken the structure (the villa does in fact reveal signs of settlement here).
The portico is undoubtedly Palladio's own creation, but the window placement conflicts with his architectural principles outlined in I quattro libri dell'architettura. He advises against placing windows near a building's corner for structural integrity reasons (the villa shows evidence of such issues).