Been to this guest house (see photo) in March 2008 recommended by a local friend in Hanoi, terrible and dishonest operator, they shown pictures of Sapa trip with 4 beded train cabin, but when i got up the train, it was a 6 beded cabin, I paid the upgraded price for a 16 people to HaLong Bay, but ended up with 42 people on the boat. Worst of all, they used dirty tricks, ie. they suddenly loss the ability to understand English, disconnect the line from a button beside their table when I was talking to their boss on the shortchanged trips, their manager, David walked away when we want to clarify the matter.
If you stay there, do not give them your room key, it will be used to allow other travellers to take shower in your room while you are out for local/day trips. The staff are only interested to sign you up on tours for profit. BE AWARE and STAY AWAY.More