The defender hopes that the Portuguese extends his deal with Real Madrid and lavished praise on the achievements of new Blancos boss Carlo Ancelotti
The Portugal international scored 34 goals in 34 league games for the Blancos during the 2012-13 campaign but it was not enough to prevent Barcelona taking the Liga trophy from the Santiago Bernabeu.
Club president Florentino Perez has repeatedly stated his desire to secure an extended deal for the attacker, 28, and Ramos is hopeful that Ronaldo stays at the capital-based side for the long-term future.
"He is a player that you can not blame anything on - he is an example of professionalism," the defender told El Mundo.
"Last season, for me, he was the best in the world. He deserves to win whatever he wants to win, really. I hope the club director is trying to renew his deal to keep him in Madrid."
Ramos will be playing under a new coach next season, with Carlo Ancelotti having replaced Jose Mourinho in the Bernabeu hotseat, and the Spain international lavished praise on the former Paris Saint-Germain and Chelsea boss.
"His CV speaks for itself - it is flawless, because he has won everything with the best clubs in the world," the 27-year-old added.
"There are team mates of mine who have had him as a coach and speak very highly of him on a personal level, not just on sporting grounds. Hopefully we can learn a lot from him during the time he is with us."
Ramos is one of six players up for the Golden Ball for his top performances at the Confederations Cup in June.