Have you considered offering shower soaps in a more economical way?
We tried a few different shower soap dispensers and preferred this model.
Installation was simple, no screws or holes in your tile. This comes with a quality adhesive system and the chambers are lockable.
Easy to wipe down and keep clean. Easy to refill. Once installed then you can buy soap in bulk at a fraction of the cost.
Easier at guest turn-over.
Tips: Be sure to prime it BEFORE your guests arrive. As this takes awhile.