Hi Susy
And Welcome, If it is a sun holiday as ina beach all inclusive. I can recommend The Bulgarian Black Sea Rivera. It is in a great little complex by the beach. And it is also reasonably priced in my opinion.
It would be a good little start to your Just You experience.
However Just You also do other fantastic destinations, I can also reccomend Lake Garda , Where the sun can also be expected.
Have fun choosing
Andy