We booked Hoi An to Hue, Hue to Danang, and Haiphong to Hanoi with Hoin An Private Cars and we were very happy with how easy it was to book, and the service provided.
Each driver was punctual, polite and helpful and we felt safe driving with them. The cars were clean, comfortable and air conditioned. They picked us up from our hotels, helped with luggage, and ensured that we were able to stop as required.
We booked by email, and they responded promptly. Their prices are also reasonable. We recommend them!
Tip: have sufficient Vietnamese dong available to pay, as the driver cannot process credit cards.