Try going there and take a look yourself? It's better than to wait for reviews which also cannot be fully trusted. You might even bump into a few moms there.
Your other thread with similar topic have been answered. It seems they are pretty tight lipped on their way of handling the children, why not visit other options before deciding?
Pat's Schoolhouse | little minds, big future
.: Carpe Diem :.
Enrichment Centres in Singapore | Enrichment Class for Kids
Modern Montessori International Group
I am by no mean associated with any of them so I wouldn't know which is good or bad. Final decision lies in your hand.