Plenty of room in anchorage to south of Portoferraio harbour.
Reading Heikell (9th edition 2015, pips 109-111) you would think you might struggle to find room to anchor, avoiding all the restricted zones. On the contrary, the anchoring area is vast and there would be room for hundreds of vessels.
We asked about berths stern to the NW harbour wall. It is best to contact them in advance to book but when we were there in June, there was plenty of room. The cost per night for a 15m yacht will be €65 + water and electricity in September, but in August it is €120