There is never an issue with sunbeds as they are piled up on the grassed areas so that you can help yourself - but a little tip, go through the spa and there is a really quiet garden space with sunbeds. So peaceful!
There are also free drinks and fruit in the spa.
I love sitting outside the main restaurant(upstairs) for breakfast, usually free tables if you walk through the doors at the far end.
And if they are still offering it, there is a ‘healthy kitchen cafe’ type place, on the ground floor, which you can choose for breakfast. Healthy options, quiet and just nice for a change.
I love Rovinj too, especially going through the little archways, to bars on the rocks beside the sea. https://www.tripadvisor.co.uk/Attraction_Review-g303833-d8325391-Reviews-Mediterraneo_Bar-Rovinj_Istria.html
I've just been looking through my photos, why do I need to go anywhere else but Lone....
Have an amazing time.