Preface this review with the fact that I am confined to bed at the moment.
This lap desk is great if the table legs are folded under so that it allows the table to sit flat on the bed.
Why? If the legs are pulled out and being used? When pets and family members jump / sit on the bed - everything goes flying. I purchased a cup with a lid and a straw attached (helps with soaking the bed from jostling).
It has a built-in cup holder, fan, and light (all of which come in handy). I detach them and place them in the handy drawer when the table is put away (under my bed).
It is very easy to put together. Take it out of the box, and that's it. It has a huge surface - enough to hold a drink, computer, and book. Or a note pad for writing, at thr same time!
I love the pink color.
I use the lap desk to have meals, read and to hold my lap top computer. The drink holder is perfect for drinks.
As far as the slot for the tablet? Using the lap desk slot with my tablet, it fell to the floor every single time. Now, I use the lap desk further from the bed's edge. However? The tablet can't be used with the built-in holder even then. It falls out onto the bed.
I place the lap desk on the bed, away from my body / tummy, because of certain health issues.
I will update this review when I can place it closer.
I have not used this lap desk on the couch yet. So? I don't know if it would work better.