My colleague and I stayed here in separate suites for a business trip. I'm not sure I've ever had a more spacious suite anywhere! I loved that they provided a massive jug of water on arrival, so you aren't nickel and dimed for little water bottles. In-suite laundry and a beautiful bathroom rounded out the experience.
The restaurant is good, but a bit pricy with limited hours.
Customer service is lacking. As a business traveler, I will consider other options in the future due to their inflexibility and leaning on "policy" as an excuse.
Most visitors like to stay in the Old Quarter of Hanoi, but we loved walking to the West Lake area for cafes, art, and culture.