I had a wonderful stay at splendid star grand hotel. The hotel is quiet and is within walking distance to the Ho Kiem lake. Mr Martin and his team were always helpful and they speak good english. They will advise you where to eat, where to shop and what to be careful of.
There is good selection of breakfast menu. The team can arrange daytrips for you, I ended up taking a daytrip to Hoa-Lu/Tam Coc with them and the trip was smooth.
I will stay at this hotel if i were to visit Hanoi again.