Nicely furnished and very clean flat located a literal 2 minute walking distance from the cathedral and an equal or even shorter distance from the metro station groenplats (lines 3,5,9,15).
Very friendly and flexible hosts who answered questions quickly and had a bunch of really nice recommendations ready in a folder in the flat. If you need anything or want to change schedule you shouldn't encounter any problems.
Will consider Rebecca as a host again when coming back to Antwerpen.