We stayed at this excellent hotel on our first trip to Vietnam. It has all the advantages you always look for: great location (beside the cathedral, at the Old Quarter, 5 min from the lake), good price, tidy, clean and big rooms, tasty breakfast and great staff. Airport pick-up is free and they can arrange everything for you (taxis, water puppet show tickets, Halong Bay Cruise Tours, etc). They arranged all these for us and everything went just perfect. Calypso Cruise at Halong Bay was great! Ms Tran and all the staff are always willing to help.
We would definitely stay here when in Hanoi.
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