Upvote:6
You can search on http://casa.it or http://kijiji.it for "Affitto Temporaneo" or mailing local real estate agencies (most famous are http://tecnocasa.it http://tempocasa.it) asking for apartments that match your needs, specifying you're there for max 2/3 months.
I strongly suggest you to search for a room in a shared flat, by the way. It will be cheaper and you'll have less constraints.