We have now been using the machine for 1 month and are very satisfied with it. As described, it is very easy to clean. The ingenious milk frothing technology and the low cleaning effort are impressive.
My overall experience with the machine has been very positive. The brew group can be completely removed and easily cleaned under the tap. The milk frother can also be easily dismantled and cleaned.
The only point of criticism is that the coffee machine lets some water run into the drip filter every time it is rinsed, which means that it fills up relatively quickly. This is a little annoying.