The Greece international signed for the Azzurri over the weekend.
“I found a very good atmosphere and a warm welcome," said the Greek defender during a Q&A with fans at the Dimaro training ground.
“They made me feel secure about my decision and it was clear straight away that they really wanted me in this team. I never had doubts, that's why I chose Napoli and I am sure I made the right decision.
“I liked watching the way Napoli played and was eager to become a part of it. I'd give anything to win the Scudetto here.
“Carlo Ancelotti is unique for what he's won throughout his career. I promise that I'll do everything I can to help the team achieve its targets and aim as high as possible."