Six by Nico Cardiff

You're walking up the pedestrianised stretch of High Street towards the castle, and you duck into this slick operation that punches well above what you'd expect from its size. Six by Nico operates on a refreshingly simple concept: a tightly edited menu of six dishes that rotates completely every few months, keeping things genuinely exciting if you're a regular. Each theme—whether it's The Chippie or past iterations—gets proper creative attention, with Nico's team treating Cardiff diners like they're in one of his London flagships. It's the kind of place that makes you feel clever for booking it, without any of the pretension that often comes with fine dining ambitions.