From the Hanoi capital you can get combining bus and boat to Cat Ba island in 4 hours 30 minutes via Hai Phong city. You can also take a bus to the hai phong city or Ha Long city then take ferry to Cat Ba town.Mr Zoom backpacker hostel is on the main street of Cat ba tourist area, 50 meter far from tourist harbor, 30 meters from Bus station, it is easy to recognize.