For the most practical setup, aim for your nightstand to sit between 5 and 10...

https://papa-wiki.win/index.php/Why_is_it_so_hard_to_find_a_53-55_cm_bedside_table%3F

For the most practical setup, aim for your nightstand to sit between 5 and 10 centimetres below the top of your mattress. This keeps your phone and book within easy reach without feeling awkward