First off, the entire Hue to Da Nang journey took 3 hours, not 1.5 hours as stated on the website - this is very misleading.
The driver was 20 min late, he called the hotel and told them that he would be late, I didn't receive any messages / whatsapp from the driver. Then the hotel front desk told me the driver was going to be late after I checked out. I could have waited a bit in my room if I had gotten the info earlier.
The driver spoke very little, very little English, basic Hi, yes, no, sorry, nevertheless he was polite. I'm not sure if it's the Vietnamese culture, they just can't keep their hands off the phone. He was reading messages, texting, making calls and answering calls on the phone (no Bluetooth no "hands-free") throughout the entire journey. Hence he was driving slow on the fast lane while the other cars were honking and over-taking us.
Although the driver did not speak English, he was very friendly and politely took us to our pre-specified destination. Fares are cheap, and I can rest assured knowing the fare in advance.