''And finally, the 12 points from Poland go to.... VATICAN CITY!!!''
''(in an Irish accent)And the 12 points tonight from Ireland go to the one and only VATICAN CITY!!''
etc
They could set a big tent in Saint Peter's Square, and put the stage at the upstairs in front of Saint Peter Basilica's facade.
Furthermore that square it's prepared to have thousands of people with a good distribution everytime the Pope makes a pray.
Also they have enough money to can set a fabolous tent.
In my opinion probably it could be more easily to host Eurovision by Vatican City than for many other countries that already participate at the Contest.