To be entirely fair, though, I was in the first sunset one (544) and a) the Whale Bar is too far for it too matter (I mean, I didn't walk around naked, but I didn't feel like I was being observed by people anyway), b) the plus is that you see both the actual sunset and the "back side" of the sunset - basically, the entire resort being lit up by the rays of the dying sun. You will not see this from the other villas, because your left wall will block it. It can be quite spectacular in itself.
So in all fairness, just about any sunset villa is great I'd say, something I can't say for the villas on the inside of the curve because there, you really do see your neighbours.