One of the beaches to spend your sunny afternoon in Bali :) Forget
Kuta beach, unless you want the whole afternoon's sunbathing time to be ruined by a tons of people selling scarfs, bracelets, temporary tattoos, etc.
Another beach that you might want to visit is
Karma Kandara beach. It's a private beach in front of Karma Kandara resort. To have a relaxing time on this beautiful beach, you have to pay an entrance fee (unfortunately... but hey, there's nothing free in this world! LOL... and it's worth it, since there are not many people know about this beach yet... ehm) ;) *am sharing you a little secret of a hidden paradise in one of the world's famous islands* ;)