The construction, however, was not so simple, as described in this "most helpful" review with me:
First was the problem that the hole spacing did not fit with an armrest to the hole spacing of the seat cushion, there were about 2 mm offset. Had already considered the Chair to send back. But then dissolved in literally with the sledgehammer approach the problem (two, three short blows and it was fine).
Proud to have solved the problem quickly, I wanted to assemble the rest, as the next problem already emerged: A screw simply did not turn in the thread itself. So the screw viewed more precisely thread is broken (see customer images). This is very annoying, because not everyone just has such a screw home. I had a fitting screw with the same thread fortunately in my old chair.
The imperfect fit give a star deduction, which is really a nuisance during assembly, here better quality controls should be carried out or simply sensible screws are used by the manufacturer.
Had already considered to give only 3 stars because even that is not just talking to the hole spacing for good quality, but eventually should here the chair will be assessed per se.
Conclusion: chair good, assembly could be made much easier by simple means.