Mazzarri was surprised to find out that he is the only Coach in Serie A to have a three-year contract.
He said: "I didn't even know of this little curiosity. It has never happen to me before now. I say it with modesty. I have never had the opportunity.
"I used to like going forward with a two-year deal at best, but I feel loved here, I feel the fascination of the city and the club's history. I feel responsible.
"In the South, football is social revenge and these challenges make me enthusiastic."