i've been to Sunny Beach once. i stayed (camping nearby) at a Hare Krishna ashram. It was quite a profound experience. If you would like details so you can visit, just ask.
Here's a post i made when i was there:
https://ecency.com/hive-183196/@atma.love/happy-srikrishna-jayanti-to-all
i may well be retuning to Bulgaria in about a week, not sure for how long though as i'll likely have to return to England within a couple of months or less until i can make a more permanent arrangement for my mother's care.
Enjoy your hols brother.
Peace & Love
Atma