I'm back from Lizard Island - wow! The island itself is so gorgeous. The hikes there are great, the beaches were fabulous... and the snorkeling was incredible. Do you snorkel/SCUBA? If you didn't do the full-day snorkel trip and you do snorkel... make sure you do it the next time you go back!
I definitely agree with the TripAdvisor reviews who say the rooms could stand to be revamped - overall I was pretty underwhelmed (but I had just come from Qualia and moved on to Longitude so I admittedly had a pretty high bar). I told Robyn, the manager, as much when I checked out (on the feedback form) and she made some sort of excuse about their remote location... but those rooms are not luxury, IMO. Nice, but the bathrooms were super below luxury and I was like, 'If the Four Seasons Bora Bora can have such nice rooms, so can you.' But that's really my only complaint about it. The food was incredible and the small plane flight was actually really enjoyable!
Anyway, thanks much for the advice about Lizard before - absolutely loved the snorkeling and I would totally return if I was in Australia. They said they're closing in February for the month to do some repairs (I think on the boardwalk and whatnot), so if you go back look to see what has changed!