My wife is from Germany originally and we've done several train journey's in Germany including from Bonn to Frankfurt which follows the River Rhine which is an incredible route.
Very interesting video, the level of cleanliness and luxury compared to the Uk rail system is so vast it’s unreal, the lack of infrastructure and investment is shocking, I hope to go to Germany sometime this year, I haven’t been for many years, I’m glad you had a great time.
They feel a fair bit wider than British stock, and they are brand new purpose built by Siemens, they feel really modern. I’ve watched videos of the old Nightjet trains and these are in a different league!