Both of those hotels are in the wrong locations - you want the Old Quarter of Hanoi, believe me. If you need luxurious accommodations, my suggestion is either the Apricot Hotel, La Siesta Hotel or the Sofitel Metropole Hotel. Personally, I stay in 3* little hotels that have far superior services than the big expensive places. I just came back from my 8th trip to Hanoi, and will be back for #9 at Xmas.