I have done New Cal and Lindeman.
We loved Lindeman and did it last December. Awesome for the kids, lots of activites, alcohol already paid for Don't have to leave if you don't want to or otherwise there are lots of daytrips on offer. For DS (who was under 1 at the time) they had a cot/changetable/sterilizer/bottle warmer/baby food all set out in the room. It is a bit old but really well cared for. There are LOTS of stairs though so be prepared lol.
New Cal was a bit average. It was old and badly cared for.