As the Italian grid is connected with the surrounding grids it's stable at 50 Hz. Otherwise you might have gotten away with a "The power is 60Hz:ish, but kind of low most of the time..."
If you use the NEC, you face a different problem: 120V @ 50 HZ is not a very useful source of power.
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I don't quite agree with DJK. The laws tend to have exceptions for foreign embassies, ships and aircraft etc. A building can effectivly be the domain of another country. I don't see why electrical would be treated any different by a court as it does not affect the buildings around it.
[This message has been edited by C-H (edited 12-04-2005).]