I strongly agree with Ian. I visited the museum this April and loved it. Incomprehensible why in some Antwerp travel guides the museum isn’t even mentioned as a highlight. The museum is definitely a must to see in Belgium. It’s really easy to reach, as it’s in the centre of Antwerp, a few minutes walking distance from the main square. I think everything about the museum is already told by Ian. I just can ad that apart from the museum, Antwerp itself is well worth a visit (the small Belfry is also Unesco listed). The main square can compete with those from Bruges or Brussels, there is a gigantic cathedral and the train station is more kind of a palace. Further it seems that there is a restaurant for every kitchen of this planet. If you go to Belgium it would be a big mistake not to visit Antwerp and the Plantin-Moretus Museum.