Location: Alexander's place is about 4mins from Grote Markt it's really incredible. Everything is walking distance, you can walk to the central station which is like 20mins or take the tram thats also less than 4mins away from the place. Also the grocery store is like 2mins away and there is a nice coffee shop next to the grocery store. Really perfect location!
Apartment: The apartment (studio) is actually more spacious than shown in the picture, the washroom is really spacious. It is perfect for two people. One thing to note is that its on the 2nd floor so you will have to climb steep stairs but isn't a big issue.
Also note that it has a wooden ceiling and the neighbour at the top level was constantly moving so you can hear all the foot steps (if you are sensitive to noise)
Overall, perfect location, great host (welcoming, very responsive, accommodating of our check-in and check-out time). Will definitely stay there again if am back in Antwerp.