"Erm, I do like him, I do love him actually. Some people probably see him outside of the changing room, outside of the club, and think he wouldn't say anything to the players, but he's really, really, really angry sometimes and he gives a big shout when he's not happy about it," the Spurs skipper told TNT Sports.
"I like it, it makes you realise what you have to do. He's very disciplined, he's demanding of everyone which is very important for me. I've been working with him for almost 10 months, but I've been learning the football parts and also as a human being even more so, which is very impressive."
The South Korean added: "I think it's helping get the best out of me as a player. As a player I always want to be honest and a good example, because I'm getting old. I'm not in my early twenties like I wish I was.
"When you're captain of a huge club, a Premier League club, you have to be a good example for the academy players and also the first team players who are looking for you. I want to be a really good example and the gaffer helps me a lot, bringing his attitude and also the way he speaks and leads the team. I think it was very important for me to see how he does it and try to copy him as much as I can."
Son said of Postecoglou's playing style, "It's so joyous, seeing different football and different play of football," he said. "I had the greatest managers - Mourinho, Conte, also Nuno and Mauricio (Pochettino). Everybody wants to play different styles of football, but his football gets more interesting every day. I want to get better for him, and the football he wants to approach.
"Everybody wants to play in the opponent's half of the pitch, as close to the goal as possible - and that's what he wants. The fans love to watch it. It's fantastic for us. It's a joy to play - obviously it's hard work, but you get the reward."