I have been to Vietnam over a dozen times, and this new bus company is the EASIEST way to get from hanoi to cat ba and back. They pick you up at your hotel and they drop you off at your hotel. Can't beat that!!
Very reliable transportation from Hanoi. Tried it several times through my travel.
They pick you up from the hostel you're staying at and drop you to your next location by the name of the hostel you give them.