The table is very sturdy well designed.  However the assembly instructions could be improved.  First of all, the table has a long side and short side, so you can decide if you want the left or right side to be longer or shorter.  This is not indicated in the instructions.  Just need to flip the table top mounting orientation to achieve this.  

Mounting of the tray is another issue that needs to be addressed.  If you follow the instructions down to the letter, there is a high chance that the tray rollers might not be align and results in difficulty sliding the tray in and out.  Do not tighten the screws for the tray brackets underneath the table top until the screws to the tray and bracket are installed, this will allow the bracket to self align to the tray.