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

https://brooksfznx367.theburnward.com/the-definitive-guide-to-nightstand-height-for-storage-platform-beds

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