What @Vasilis_Stathousis has said is true, I would say. I work from home, so I wanted to get a good chair where I spend a huge part of my day.

Key points mentioned:
1. It is very beautiful in appearance, everyone who has seen it has said the best things.
2. It is a tall chair and does not go very low, I am 1.70 meters tall and indeed I do not touch the floor well (or at all), I use a footrest to be comfortable.
3. It creaked from the beginning (it has wood in its construction).
4. Indeed, the backrest is not adjustable.
5. It is not ergonomic.
6. The leather has a nice and cool feel.
7. The seat has a large surface, so if you have a few extra pounds, it is very good. Personally, I am thin, so I wouldn't necessarily consider this a good thing.
8. If you lean your weight backwards, you can have a good tilt.

Despite all the negatives I mentioned, I do not regret my purchase.

I have it for a few months. It looks nice, but I almost bend over. The back and the seat are firmly connected with an iron and move at the same time. The back itself does not move. If you want to move it after a while to make it more comfortable, forget it. That's why I said I almost bend over. Additionally, when I lower it to the lowest point, my feet barely touch the floor and I am 1.78 meters tall. I imagine someone shorter will have a problem. I do not recommend it, look for something else, maybe you will find something better and cheaper...