While there are overwater bungalow resorts scattered all throughout the South Pacific, Fiji is home to only 3, at least for the moment. What is nice about these 3 choices, is that they do vary a lot from each other, which allows guests a few options. Out of these, 2 offer rooms around the US$500 a night range while the third is geared toward travelers that adventure with a larger budget.
If you are looking for something other than the three listed below, you'll be able to go to one of the other islands in the South Pacific, where you'll have around 30 different resorts to choose from if you can make it to Bora Bora or elsewhere in French Polynesia. There are a few closer resorts in Samoa and New Caledonia as well, though those are less ideal than the others.