Outdoor washbasin on the terrace for drinking water

Hello, I would like to install a drinking water sink on the terrace. Currently, I only have a tap without a basin and the excess water runs onto the floor. However, it should not go towards the outdoor kitchen, but really just be a tap + basin with a drain – directly on the house facade.

Does anyone have this? I would like to get ideas (and maybe experiences).

Thank you very much!