Maradona's side were knocked out in the quarter-finals in South Africa following a 4-0 thrashing at the hands of Joachim Loew's Germany.
But Grondona insists the former World Cup-winning Argentina captain, who guided the national side to the World Cup through a difficult qualifying campaign but impressed in the group stages in South Africa, overall did a good job.
"He took over at a very difficult moment and he qualified, which is important," said Grondona. "And he finished fifth, better than in other World Cups - all of that should be valued.
"It seems to me to be only correct that he stay on, I don't see why not.
"His name was put forward by me, but we had lots of problems.
"And I'll tell you something you may find funny - he was the defensive coach."