The Blues announced in April they had agreed a deal to sign the 23-year-old from Werder Bremen for an undisclosed fee.
Marin spent three seasons with the Bundesliga side, where he was team-mates with Pizarro. The Peruvian endured a frustrating spell with the Blues between 2007 and 2009, but was quick to recommend the club to Marin.
"He [Pizarro] only had good things to say," Marin told Chelsea TV. "I asked him how it is here and he still has a house in Cobham.
"He didn't play a lot but he said that he had a great time here and he thinks I will enjoy it.
"I think I am an offensive player, more a winger, so I hope I can give a lot of assists to strikers so they score a lot of goals and they help the team.
"If you play for such a team as Chelsea you want to win trophies, like last year with the Champions League and the FA Cup.
"The Premier League I think is the best league in the world and to win this, that is my aim."
Marin is currently enjoying his first few days training with his new team-mates after the summer break.
However, the midfielder's keenness to settle with the west Londoners saw him familiarise himself with the club before pre-season began.
"I am now here for three weeks and I think I know everybody [who works here] now," Marin said.
"I am happy to start team training now and I feel good. It was the first time we trained together with the ball, we did a lot and it was good intensity.
"The first two days we have only one session a day and then it starts with double sessions."
Chelsea defender Branislav Ivanovic has pledged to help new signing Marin settle into life at the west London club.
"I met him in the World Cup in 2010 when he played against us for Germany," Ivanovic told the club's official website, www.chelseafc.com.
"We met again when he signed for Chelsea, and we trained today [Friday] for the first time together and I am very impressed and feel very positive about him.
"He feels confident and he feels ready and this is most important for now.
"It is great for me because I can speak the Serbian language with him and I will try to help him but he speaks English already."