I’hv been to the preschool at Alexandra Alexis Condo Rainbow Cove.

I like the outlook and all and also the curriculum. I have registered with them.
One good point to look into:

1) Teacher ratio to child 1-6

MONTESSORI TRAINED. I believe in Montessori as my elder sister sent her daughter to a Montessori school and now her daughter is in primary 1 she does not need any enrichment.
See what kind of result you want to see in your child.