Way from Ninh Bình to Ha Noi was much better than other one with a company, their name I don’t want to say. No bus change, no driver changes, a company member wrote me himself (instead me running in Hanoi streets and asking local people “can you call the driver …?”. Don’t forget to pay additional money for extra service like pick up and drop off when you want. Get ready to change bus to a car in the end point of the bus. Just take your bags and seat to a car. It’s simple. And I’m appreciate a speed of bus. I’m not sure I’d it legal or not, but 100km/h is much better than 80. Thanks for your attention and sorry for my bad English (your Russian is not better I’m sure). Good luck!