Tub with jet nozzle and support. Pressure and air mixture to the nozzle jet are constantly adjusted. Jet nozzle pressure constantly adjusted from 0 to 450 kPA. Analogue reading and display of filling water temperature. Analogue reading and display of the water pressure temperature. Sanitizing hand shower with stop valve for tub cleaning. Drain system for emptying the water from the massage circuit. Jet nozzles rinsing. Two-step stool.