I would say 3 and up, depending on your child's activity level. They have a small area for 2 and under and they have bounce areas but the toddler area doesn't have much and the bounce areas are usually crowded with school-age kids.
2 would be the youngest age I would recommend. They have bouncy houses there for younger children that cannot climb.
I would agree with the previous reviewer. I took my 18 month old a while back, and he tired of the toddler area pretty quickly. There really isn't a whole lot in the toddler section to keep them engaged, unless there are others of a similar age, and then you'll likely get more use out of the toddler section because the little ones will engage with each other. Still, I'm not sure you'd get the full 3 hour time period out of the toddler section even with other little ones present, and may find yourself trying entertain your little one while your older ones climb until their 3 hour paid time is up.
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