Another endorsement for the Big 4 at Howard Springs. It is out of town, but less than 30 minutes drive to centre of Darwin.
If you want to be closer, another park we like is Hidden Valley Holiday Park - a large operation. Great en suite sites. Not cheap. Close to the Parkway road which is like a freeway almost to city centre. Is not far from airport, so can get a bit noisy at times when there are combined military exercises happening - but we find the planes entertaining.
Both these parks are far enough from the sea and mangroves for sandflies to be less of a problem than at other parks.
We stayed @ Free Spirit last july , good park and facilities , we could only get a upmarket site at the time , ensuites/kitchen /laundry shared by 4? vans.....very nice @ $66 a night though......still it was peak at the time .....also poolside bistro and entertainment everyday :)
Just tried link and it doesn't work; Just type Darwin Caravan parks in search box Top centre of page displayed. The OP question has been asked many times.
__________________
Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
We have stayed several times recently at Howard Springs but also had a good stay at Discovery Parks Darwin, closer in for those days where you are off to see the things to see.... funny thing around midnight was going to have a go at the bloke who's car alarm kept going off. Stood next to his stupid car..... noise came from above, a clever (annoying) bird enchanting his would be mate.