My husband and I have been to this place only once (although this cafe is located right behind our hotel), but we did not regret it.
We have a favorite among the restaurants of new Nessebar, but I also read reviews about King Kong and on the last day we still went to eat. We ordered pizza, fried bacon, a non-alcoholic cocktail and hot chocolate. I usually judge an institution by the quality of cooking national dishes, but here I was in the mood to eat pizza :) And we ate it, leaving about 20 lev for everything.
We were satisfied with the service, quality and speed of cooking, as far as can be judged from one visit, and next time we will definitely try something from their traditional Bulgarian cuisine :)