What kind of prongs do you need in Italian hotels? (Not voltage converters, but prongs)

Mostly Schuko, Euro-Plug and (sometimes) vintage types.

You need a standard Continental-type adapter plug which has two round prongs about 1/8" in diameter. The same plugs work in Paris, Brussels, Germany and all over the continent. Note: most hotels will have hair dryers. Laptops can work on the European electrical current--you just need an adapter plug.

Continental plug = Euro-Plug but only called "continental" by people NOT living on the continent ;-) of Europe all others call it Euro-Plug ;-)

Here are the URL's of two sites which describe (including illustrations) the sockets and plugs used all over the world, including of course, Italy.

http://www.kropla.com/electric2.htm

http://users.pandora.be/worldstandards/electricity.htm