This kit was easy to assemble, the instructions were very clear, each piece is pre-drilled or/and labeled perfectly. The hex key is supplied as well as the wood glue, you only need your own Philips screwdriver. It took me about 2 hours to assemble it. I'm a bit slow to follow instructions and build stuff. I want every step done right, so I guess it could be done faster.
The table, as well as the stools, seem solid. One side of the table folds up to allow more space. I use it alternately as a breakfast table or as a secondary desk.
I found the stools comfortable but I rarely sit for more than half an hour. You can always add a cushion if you plan to stay longer.
Overall, I'm happy with this product, and recommend it, especially if you need a versatile table for a small space.