Potato salad with Dijon mustard mayonnaise

Ingredients: 2 pounds potatoes (Yukon Gold or red potatoes), peeled and cut into bite-sized pieces 1/2 cup mayonnaise 2 tablespoons Dijon mustard 1 tablespoon white wine vinegar 1/4 cup red onion, finely chopped 1/4 cup celery, finely chopped 2 tablespoons fresh dill, chopped Salt and pepper, to taste 3 hard-boiled eggs, chopped (optional) Paprika, for garnish (optional)