Ancelotti, who replaced Jose Mourinho at the helm this summer, has been branded "a great boss" by the Portuguese international.
"We're very happy with the coach. We're training well and working to have the best possible start to the season. He is very friendly with the players and that's good for us," Ronaldo told reporters at a press conference.
"He's uncomplicated and a great boss. We want to learn from him. The trainer has different strategies and different positions for everyone.
"It's good for me to try to play in other positions and I'm very comfortable with him. We'll see where I play during the season. I'm not worried about the position, just the team."
Ronaldo, 28, has been widely linked with a return to Manchester United this summer.