First time to explore Bandar Seri Begawan a couple days in between some other trips like "nearby" Borneo. What we saw was spotless, clean, friendly with amazing mosques one can visit. (We booked a day tour which I recommend you find and do)
Breakfast was really good, hotel staff very friendly and helpful. Our hotel room was spotless, quiet and modern. Can walk to a nearby mall/waterfront area, (we didn't mind the heat) but not a lot "happening" in Brunei (hence a day tour to learn more and get around). This hotel location very good for all of this.
My personal complaint is how cold the rooms are and we seemingly could never get the AC to be a bit warmer, had to just shut it off until it got too humid. I don't do cold well, so I froze. Most people would probably like this. Have lived/traveled throughout Asia for years and find this typical of many large hotel rooms.