I’m there at the moment halfway through a 3 week trip. Gatwick-dubai-Perth is not too bad actually we are based in Fremantle near Perth with family but are currently on a week trip 13 hours drive north in Exmouth. World heratige site, national park Ningaloo reef has blown me away. Stunning beaches, warm aquamarine water and the most amazing snorkeling ever. I didn’t know which way to turn my head once I got under just thousands of multicoloured, all shapes and sizes of fish, turtles, octopus, stunning coral formations all just a few feet from the beach. You’ll need a car for this though as lots of driving about is involved. We also seen wild kangaroos and Emu’s which visited our holiday house.3 years ago on a similar visit we went South instead and stayed in Margaret River which was a lovely quirky place and again awesome beaches, more surf down there and heaps of vineyards and lovely restaurants if you’re a foodie. I’ve not seen the other side of Australia so can’t comment on that but yes in WA there are long distances between things.