I spent 3 days here with my family, and we had a great time. The apartment is perfectly located for anyone wanting to explore Antwerp, and you won't believe how big it is given the location.
We were very comfortable with four of us, but the setup allows for up to 8 if you are happy sharing rooms.
The apartment has a lot of old charm, but also all the latest amenities you need. It was spotless, and a lovely environment to hang out in. Highly recommended!