We took a day time sleeper bus with HM Happycar from Hoi An to Phong Nha. I received a WhatsApp message from the organizer to ensure we found the bus ok before departing. The bus was extremely clean and in great condition. The little bed capsules were private and lay totally flat, or you could put them into a partially reclined position. I am 5'4" and could lay completely stretched out, my friend is 5'9" and could do the same with flexed feet. There was a USB port, lights and air vents. The driving felt very safe and there were two drivers who traded off which helped us feel safe as well. We stopped 3 times for toilet breaks. After getting dropped off and going about our day, we realized we forgot air buds on the bus. I messaged them via WhatsApp and they responded immediately that they would ask their cleaning staff. They found them and organised a nearby hostel for them to be dropped off at for us to pick up at our convenience. Very impressed overall, would book with them again.

New car, I went on the Quy Nhon -> Da Nang trip and it was very comfortable. The shuttle bus picked up and dropped off at both QN and DN. The car company is new but I don't know why I saw many low reviews so I was hesitant when I bought the ticket, but after the trip I found it great. All the staff were friendly and enthusiastic. Text the co-driver if you want to go to the toilet and he happily stopped the car at the nearest gas station so my family could get off!! Other cars sometimes grimaced and cursed lightly :) New car, strong air conditioner, clean. I don't understand why there are many low reviews? Everyone please support me, I went from Quy Nhon to Da Nang and the whole car had 7 passengers, it was pitiful. Wish Tan Quang Dung success.