It quickly takes taste there !!

I really loved this puzzle !! I had never done in 3D, and it's really great fun, we do not see the time pass!
The pieces are solid, it's nice when you sometimes press it to calibrate the well.
Some pieces are folding in advance, for the angles. Folding is very easy, it's pre-folded so no problem with that.
The supplied base to ask them the Tower does not really offer stability initially, so I did not build my top, but simply on a table. I only used the base at the end, and it is that once the puzzle largely mounted, it snaps into the base and becomes stable. So it is a good support for the finished puzzle.
The only downside in my opinion: it ends too quickly! An evening is sufficient to overcome the 4 faces being strictly identical, and therefore each existing room 4 times. In the end it is not "broken heads" as 1/4 of the puzzle, and it replicates to the other 3 sides as you go.
A personal problem: Unfortunately, I did not finish my puzzle because of a manufacturing defect. Indeed, three pieces had a manufacturing defect and did not return at all to their location, with a difference of 2 millimeters good. I redid the building from top to be sure, but yes, these rooms were supposed to be there well and did not have quite the right shape. Result, almost to the end, I find myself with an Eiffel Tower without top. What a pity!
However, I seem to be an isolated case, since I have not seen this mentioned in other comments. But I prefer to report anyway. That's why I put a note to that puzzle, he passed a very good evening and made me want to do others.