"He doesn't over-speak or anything but when he talks, people listen. He's not shy of chiming in when we're discussing tactics ... he's got a very good cricket brain.
"He's started to develop some friendships with some of our guys as well. It's been really positive."
Uncertainty surrounds Stokes' potential return date for England. The 26-year-old was provisionally named in the tourists' ODI squad for the series that follows the Ashes, starting January 14 in Melbourne.
However, England's cricket board won't settle on Stokes' punishment until UK prosecutors decide whether to charge him.
"We still don't know a date when he will leave," Stead said.
"I'm sure he was looking at it [the Ashes]. I know he'll be disappointed for England."
Stead has handed Stokes extra responsibility, asking him to open the bowling and bat at No4.
The game-breaking allrounder, who was sold for A$2.8 million in last year's Indian Premier League auction, struggled early on in his New Zealand stint but struck form with a match-winning 93 in the T20 contest during last week.
"He's had five matches for us now ... it looks like he's getting better and better," Stead said.
"He's batting a little bit higher than he normally would, but we can grow his experiences and that's good for him in the long run.
"Batting, bowling, fielding — and even at training — he's going full tilt. He's not holding back at all."