Excellent overnight bus trip from Hoi An to Da Lat with Viet Lao. The staff was very friendly, the bus was clean, the driver was a good driver, and there was no music or unpleasant noise. All this at a good price with smooth communication in English, so I recommend it. For first-timers: there are no toilets, but there were three stops approximately every two hours (you are notified in advance by announcement). You cannot eat on the bus, but there are restaurants and snack bars at some stops. You must remove your shoes and walk barefoot. At the stops, plastic slippers are provided as you exit the bus; you return them to a bin before reboarding. A small bottle of water, a blanket, and a pillow are provided. There is a USB port. I couldn't get the Wi-Fi to work, but that might be my fault. For those who are overweight or very tall, I recommend taking buses with fewer seats (there were about 35, and I'm not overweight, but it was a tight fit). I recommend the lower and middle seats.

The staff provided excellent service, were enthusiastic and attentive.

The booking process was smooth. There apparently weren't enough reservations for my bus, so I was assigned to a different one. It was a bit confusing at first because my seat number changed – but ultimately it was an upgrade. We left Hanoi at 10 pm, made two stops, and arrived in Sapa at 5 am. The driver was a bit rough, but he drove safely. Thank you very much.