There's a snack bar/deli on site. Public spaces have free WiFi. Business amenities include a business center and a meeting room. A terrace, tour/ticket assistance, and concierge services are also featured at the business-friendly Hoai Anh Plaza Hotel. Self parking is free.
We arrived at Hoai Anh Plaza at few minutes after 2PM, having booked it months in advance. When we arrived, an extremely rude security guard blocked us from going inside, and told our taxi driver we could not go in despite having already paid for our room - no explanation as to why. People sat in the lobby just watching this happen. We had to stand on the side of a very busy road booking another hotel, and had to get another taxi to that hotel. When I messaged the hotel to ask for a refund, they ignored it - I am still waiting on Expedia to get back to me about this matter. Avoid at all cost.