Penylan Library and Community Centre

If you’ve got a baby or a wobbly little walker, this place is genuinely one of the better options in Cardiff for soft play. It’s kept clean — properly clean, not just a quick wipe-down — which honestly isn’t something you can say about every soft play in the city. The layout means you can actually see your kid without craning your neck every five seconds, which any parent will tell you is worth its weight in gold. Pricing is reasonable too, so you’re not wincing at the door. A solid local option for the under-twos crowd.