Newbridge is meant to be fab. I heard a lot of mums rave about about it, have to be three months old though. Pontpool is okay as well as has the little pool for kiddies but have to be 4months for there.
We love Ebbw Vale and Newbridge. Ebbw vale have baby specific sessions in the day that are a lot quieter, both have fountains etc which makes it fun for babe when older! X
Newbridge!!
Newport international sports centre have a small family pool, which is warmer than their main pool and has changing rooms for families too, plus nder 4's go free. It's a nice little pool for little ones.