World No. 1 Novak Djokovic has defended himself on Twitter after criticisms went viral about his open letter to Tennis Australia CEO Craig Tiley.

Djokovic wrote the letter to the Australian Open boss with "suggestions" on behalf of players, including permission to visit trainers or a coach as well as move as many players as possible to private residences with tennis courts.

The requests came after many Australian Open players were doing their compulsory 14-day hotel quarantine in Adelaide.

Djokovic took to Twitter before midnight saying that his suggestions were made with good intentions and he didn't mean to convey a "selfish, difficult and ungrateful" attitude.

"This couldn't be farther from the truth," he said in the Twitter post.

"I genuinely care about my fellow players and I also understand very well how the world is run and who gets bigger and better and why.

"Hence, I use my position of privilege to be of service as much as I can where and when needed."

Djokovic said that the letter was "misconstrued" and that he used his good relationship with Tiley to "brainstorm potential improvements".

However, this was quickly shut down by Victorian Premier Daniel Andrews, saying "the answer is no".

Djokovic explained that the letter came from suggestions made by other players and that there was "no harm" in putting ideas forward.

"There was a general impression that the players (including myself) are ungrateful, weak and selfish because of their unpleasant feelings in quarantine," Djokovic said.

"I am sorry it has come to that because I know how grateful many are.

"We all came to Australia to compete. Not being able to train before the tournament starts is really not easy."