Speaking to United Review, the veteran defender admitted the Reds' top scorer has quickly adapted to life with his new colleagues after joining from Arsenal last summer.
"He’s done really well," said Rio. "He’s come in with no airs and graces about him – that’s the first thing you notice. He’s come into a really down-to-earth changing room; there’s no way anybody could come in as the big ‘I am’ and that’s definitely not in his make-up.
"He’s a really nice guy. The best way you can settle in at a new club is to get on with the other lads and he’s done that straight away. Going on from that you’ve obviously got to be able to put your foot on the ball and put the ball in the back of the net, and you can’t ask him to have done any more than he has."
Having notched nine goals and four assists in his 12 United appearances so far, van Persie is likely to face his former employers for the first time on Saturday, and the manner in which Arsenal supporters will react to their former idol remains unclear.
While a potentially disconcerting ordeal, Ferdinand - armed with his own experiences of facing West Ham and Leeds - feels the Dutchman can rise above the pre-match hype surrounding his part in proceedings.
"It is hard," he admitted. "But Robin’s experienced enough to put it to one side, get on with it and play the game. You just have to treat it like any other game. That’s the difficult thing: trying to make it normal when everyone around is trying to make it into something it isn’t."