On the other hand, Cat Ba Town is not commercially exploited yet. So, choose a place in the town that gives you views of the mountains around. Meanwhile, we got back to Hanoi in the same way. Hopped onto a ferry with the locals, experienced rain along the way in the bay, got to Hanoi Railway Station to catch an overnight train to Dong Hoi.This was a not-so-comfortable train journey. Yet, we managed to get to Dong Hoi, the waterfront city. We chose Dong Hoi because we registered for the Hang Va Cave expedition which in the Phong Nha National Park, 45 mins from Dong Hoi. That whole day was spent in walking around the city, exploring the Dong Hoi local market, talking to the locals, exploring cafes and randomly sitting at the waterfront. This has been our most favourite city during our Vietnam visit.