For the best look and comfort, aim for your bedside table to sit between 55 and...

https://www.stall-bookmarks.win/for-a-comfortable-reach-your-nightstand-should-sit-level-with-your-mattress

For the best look and comfort, aim for your bedside table to sit between 55 and 70 centimetres high. A good rule of thumb is to keep the tabletop about 5 to 10 centimetres lower than the top of your mattress