After 1 year I can say that the chairs are terrible.. no matter how many times you tighten the screws they still creak. But let's not forget the price, so I can't complain.

Very nice dining set for the money. Sturdy both the table and the chairs. The chairs can hold up to 80, max 90 kilos for the back; for more weight, I see it a bit dark. The table is easy to assemble but the chairs are a headache at first.. it took me an hour and in the end, I searched online for how to do it.
https://m.youtube.com/watch?v=mn49h-nZoGg
After that, it was easy, 20 minutes for one chair. I have uploaded photos of how the bases that hold the seat should be because it's complicated if you don't know. It comes with an Allen wrench and something like a ratchet but it's a bit difficult since there are the same on each chair; I took out 2 ratchets on each leg and tightened because it's hard to fit into the nut, so to avoid losing track and to ensure the holes are aligned, I did it with 2 ratchets simultaneously. The black caps to fit over the nuts at the end are a bit difficult; I tried to hammer them in and they come off easily, so I took them out to finish. I would also suggest removing the plastic from the legs and putting on those stickers to avoid creaking on the floor. I am satisfied and it fits perfectly with the furniture in the kitchen. For the money, the dining set is worth every euro