In our Peterculter bathroom, the bath retains a shower above it and recesses give washing bottles somewhere to go. One bathing area therefore has to serve two different positions. A bottle that is convenient to reach while standing may be difficult to take from a shelf while seated in the bath.
Before choosing the height of a recess, sketch both positions against the bath and mark the useful reach for each. Check the location of the glass screen and consider which products are shared between the two routines. A single opening might serve them both, or separate positions may make more sense. Use the bottles you actually buy to check the opening height and depth. This is a more reliable brief for the recess than asking for a shelf to sit at a standard-looking height.
