The 25-year-old Chelsea star is determined to succeed in Brazil as his nation have never won the tournament before and believes that playing the final at the Maracana will serve as extra motivation.
"There are many reasons why this tournament is so important to us," he is quoted as saying by AS. "Most importantly we have never won it, but it is also held in Brazil. The thought of winning the trophy at the Maracana is fantastic; it is a mythical stadium."
Spain kicks off its campaign on Sunday against Uruguay and Mata was quick to highlight the threat that Luis Suarez poses to his side.
"Suarez is very good. Not only does he scores goals and provide assists, he brings so much more to the team," he said. "We have to be very careful with him."
Finally, the midfielder praised captain Iker Casillas following Spain's 2-0 victory over Republic of Ireland in midweek, but says that Victor Valdes and Pepe Reina would also be fine choices for the No.1 spot.
"The other day we saw what Iker is capable of," Mata said. "It is very difficult for the coach to choose a first-choice goalkeeper because all three play in the team."