A perfect summer in Belgium for me means soaking up the sun while wandering the charming streets of Bruges and biking through the pretty countryside. I'd take a holiday to the Ardennes, enjoying hikes and kayak trips in the green hills. Tasting belgian waffles, chocolates, and beers would add to the fun. Ending the day relaxing on the sandy beaches of Knokke-Heist would make it just right.