You probably can't find dakos bread in the Netherlands, so if you can't make it yourself, you can substitute sourdough bread. I like to toast it and serve it with the salad. Alternatively, you can serve it more like a panzanella by tossing the bread through the dakos salad. This way the bread absorbs the liquid. Either way is fine, of course. Choose what you like best.
In a bowl, combine the salad ingredients: tomatoes, olives, capers, red onion, herbs, red wine vinegar, olive oil and salt and pepper to taste. Mix well.
Distribute the bread cubes over the salad and let it stand for a while to allow the bread to absorb the liquid. Alternatively, serve with the salad.
After about 10 minutes, sprinkle the crumbled feta over the top and serve the salad.