I'd start here: www.dzogchen.it
even though their main center is only sort of close to you, they likely have contacts in your area.
You could also inquire here: www.tendai.eu
as I know Shomon has some things going on in Italy, and if nothing else, can direct you toward some contacts.
Great River Tendai Sangha: a Tendai Buddhist community in Alexandria, Virginia, USA (near Washington, DC):