What a great little spot! Truly in the heart of everything. We walked from Antwerp Central train station (about 15 min). It's so fun to sit on the balcony with your beer and waffle and observe the city life.
*Only note* We did have some trouble sleeping due to standard city noises and occasional raucous street partying and firecrackers that lasted well into the 5am morning hours. Had we spare earplugs I'm sure it would have been different, but overall we were still pleased with the location.