Reina is on a season-long loan at the San Paolo.
"It's been a magnificent welcome. It's been brilliant. My family have adapted well to Napoli. The kids in the school are happy and my wife is making some friends. It is very similar to Liverpool," he told the Daily Mail.
"It is a humble city and very, very passionate about the team. It is almost a religion, like in Liverpool. That's always brilliant for the players. It is a positive pressure. It is a healthy club, that's for sure.
"Along with Borussia Dortmund it is probably the healthiest club in Europe. The squad is being built little by little with room to improve but it is going the right way and everything is good."
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