It was relatively easy to install and the child sleeps well. The major drawback is that the cover cannot be removed for washing. We still don't know how we will clean it, probably with a steam device. Also, a piece came off from the back, but it seems like it can be reattached somehow. We hope it doesn't affect safety. We had the Maxi Cosi Axis fix before, which was a very sturdy construction, and that's why we chose Maxi Cosi again. But the truth is, we had higher expectations... It secures with the car's seatbelt and the child is more comfortable.

I received two identical car seats the day before yesterday (I have twins). First impressions, therefore, and I will come back later to update, mainly to inform about the sleep issue. First, I am posting a review for this specific product.
In general, I was considering another brand with isofix for 103 euros.. In the end, we didn't like it. We tried many. In the end, I chose this one for two reasons.
The first reason is that it has very good side protection and it fit better on the children, even though they have completely different body types.
The second reason is that sometimes I want a third person in the back, in one of our two cars. That's why the seats should not be too wide, because a third person doesn't fit in the back. (In the other car, it's fine), They have isofix, but when the third person gets in the back, they sit in the middle after you fasten them with the seatbelt and pull them to the edges.
Edit 29-11-20. The children sleep fine. I haven't taken any long trips yet, only relatively short ones. I am very satisfied.
10-4-2022 From what I saw, the price has dropped quite a bit, so now I consider it a very good purchase. I bought them for 200 euros cheaper than abroad. The children sleep comfortably in both cars during the trip and in general, they sit very well.