There's a restaurant on site, as well as a snack bar/deli. You can enjoy a drink at the bar/lounge. Business amenities include a 24-hour business centre and meeting rooms.
Public spaces have free WiFi. The business-friendly Halais Hotel also features tour/ticket assistance, coffee/tea in common area, and concierge services. An airport shuttle (available 24 hours) is available for a fee.
Smoking is allowed in designated areas at this 4-star Hanoi hotel.