Comfortable and felt safe. I have been on many overnight busses through South America and this was a far superior experience. Comfortable bed / seat, relatively easy to find the bus and get on board despite the language barrier. Bus staff were friendly and very helpful. They even dropped me as close as they could to my hostel

There was a bit of nudge via text message to get me to arrive 10 minutes before the scheduled departure time, but otherwise everything went well. The driver even dropped me off at my hotel. Of course, the driver drives like a maniac, especially overtaking without visibility, but hey, that's Vietnam for you.