Ninh Binh creates a familiar Vietnam itinerary problem: it looks close enough to borrow for the day, but the photographs make you wonder whether you should bring an overnight bag. A Ninh Binh day trip from Hanoi can absolutely work. You can enjoy a boat journey, visit a historic site or climb a viewpoint, and return to your Hanoi hotel that evening.

Staying one night gives you something different: room to spread those experiences out, enjoy the countryside between visits, and start the next morning without first leaving Hanoi.