Those flats are hotels for all the people like me to stay in, without them we would all be sleeping on the beach. Imagine this view with a bunch of tents in it. :)
This is just one little part of paradise, that's one of the good things about Waikiki, it is very crowded with many high-rises, but they are all confined to one small spot; the rest of the island is just how you picture paradise. :) I’ll show you some of it in the next few days – stay tuned. ;)