This Twenties mock-medieval mansion set in gorgeous parkland is surrounded by cottage annexes, a chapel and barn-style spa. The effect is akin to an ancient Sussex hamlet – and there are special children’s pool times, football, quoits, croquet and giant Jenga. The sea is a 10-minute stroll away, and the hotel will organise picnics for the beach and separate children’s dining times. It’s pet-friendly too.