Griet's house is really nice — everything you need is provided. The location is a bit of a walk from the old town (25 min), but close to the train station (10 min) and all utilities. Even though Griet was out of town for the duration of my stay, she made sure that everything was arranged for my arrival and was available to answer all questions. I will definitely try to book a room at Griet's again if going back to Antwerp!