We really enjoyed our stay in Nana's Apartment. It is very cozy and near to supermarkets, the central station and several bus and tram stations. You can also walk to the city centre in 15-20 minutes. The communication with Nana was great, she is very friendly and helpful. Check-in time was flexible.
The Apartment is on the second floor and the stairs are pretty narrow and steep. For us it was no problem, but if you have a lot of luggage it might be a little bit challenging.
If we visit Antwerp again we would love to stay in Nana's apartment.