Europe cannot exactly be described as a small continent because of the vastness of the landscape.
Therefore, it would be inaccurate to highlight the possibility of a dedicated river cruise that enables you to see all.
This compels you to choose in precision the parts of Europe that you want to see so that you can take a cruise on the European river that is closest in locality to your aforementioned destination.
When you want to embrace the beauty of Europe as a whole, you then need to plan to take a cruise on as many of these rivers as you can and live the ' European dream' if the cruises are it.
This can be expensive, but then again, if you have been saving all your life to do this, then there is no reason not to, right? Some rivers hold more visually appealing landscapes than others so it would be wise to alienate, according to your geographical tastes, which exactly these are.
This way, you will be able to feel like you have spent some thousands on a cruise that was worth every nautical mile on the open waters.
Make sure in your choice, you also highlight the kind of class that you cruise in.
Though on the same ship, you may be surprised that a deluxe cruise (though painfully more expensive) does give you a better overall experience of a European cruise than one taken in the economy classes.
Have all these fine details and after a week or so sailing, you will be guaranteed of having a story to tell.