Nice selection of belgian beers. Prices are good if you know you are right across one of the biggest tourist attractions of the city (manneke pis) it used to be a old puppet theater so lots of puppets inside. Even of you dont need to, just go to the toilet and you wont know where to watch. Friendly staff that knows how to pour you beer. Always quick service.
Visited on 15/05/2018 : Very sunny day on the terrace. Busy, right next to the Manneke Pis. Lots of tourists passing by and taking pics. However, this was interesting to watch. Service was friendly and quick. Beer list was not extremely special except for some special Cantillons. Prices seem reasonable for that part of town, even for the Cantillons. Doesn't seem essential to me for beer geeks but if you want a good beer on the terrace in the centre of the city, it's not a bad place at all.
Place near the pissing boy, so really center. Service is good. Selection is not huge, but cantillon lou pepes available (35 euros per bottle) and some other interesting stuff. Prices are reasonable for this part of the city. Fresh orval is only 4.30! Aged one is 5.20 (yes they have aged orval available, although not very old). Overall: not essential, but still good place to have a quick pint.