I've stayed at Mill Rock Island two long weekends, and I promise there will be more!
I've spent US$600+ per night at a few other local establishments, but nothing compares! The privacy, quiet solitude, yet closeness to Savusavu town and all it has to offer is second to none. I travel extensively, and when I desire some "alone time" this is my favorite place on our planet. Hands down. I can not recommend Mill Rock Island enough if you are looking for a private retreat, away from it all, yet close enough for everyday conveniences. A+++++