Good service from Da Nang to Kon Tum. Water, blanket and pillow are provided. You can recharge your electronics with usb plugs. There were some occasional stops for gasing up/picking up people so you could arrive a bit later than described. (Note: we understand and spoke a bit vietnamese)

I booked my bus ticket through the app. The bus conductor called to confirm the pick-up point the day before. An hour before the trip, they called again to confirm the pick-up point. The Vexere app accurately updated the conductor's phone number, license plate number, and bus location. Dinner cost 50k VND per person. The seats were comfortable, and there was water and plenty of power outlets for both USB and Type-C cables.