The city centre beach Banje is just a short walk from the Ploce Gate. As with most beaches in Croatia, the water is clean & clear but the beach itself is pebbly rather than sandy. Most of this beach has been sold off to the East - West bar / restaurant. Sun loungers & umbrellas are available for hire at 120KN for two loungers and one umbrella.
The locals tend to congregate in the half that still is under municipal control.
Banje beach outside Ploce gate
Google map: bit.ly/bdjbOy