The man was actually a Croat.
He was liked more for preventing bloodshed from breaking out, holding the nation together and creating possibly one of the most prosperous Socialist states in the eastern bloc. Also, he made it easier for Yugoslavians to travel freely around Europe and the world as well as encouraging investment in Yugoslavia itself.
It was so successful economically, you could argue thats why it was thrown out of the Warsaw Pact! Okay, maybe I was being sarcastic on that one there.
To his credit though, he was one of the few people to have the balls to stand up to Stalin when he pulled out of Cominform.
Marshall Tito wrote:
"Stop sending people to kill me! If you don't stop sending killers, I'll send one to Moscow, and I won't have to send a second."
The main detractor here was that he, like other dictators, also abused power. People died, there was another reason why Yugoslavia managed to stay together: the man used the millitary and the secret police to punish anyone, Serb, Bosnian or Croat who dared speak of succession.
Still though, he is still kind of liked across the former Yugoslavia. In Macedonia, they will erect a statue of the man in the capital, Skopje.