A bathtub assembly comprising: a bathtub shell defining an interior cavity configured to contain a volume of liquid, the bathtub shell comprising an upper rim at least partially surrounding the interior cavity and having at least one dispenser flow opening defined therein; a circulation system in communication with the interior cavity of the bathtub shell, the circulation system being configured to create a flow of the liquid to and from the interior cavity of the bathtub shell; a housing in fluid communication between the circulation system and the interior cavity of the bathtub shell, the housing being connected to the bathtub shell at the at least one dispenser flow opening and configured to convey at least a portion of the flow of the liquid created by the circulation system into the interior cavity of the bathtub shell through the at least one dispenser flow opening; a dispenser assembly in fluid communication between the circulation system and the housing, the dispenser assembly being configured to contain a substance therein and to expose the substance to the at least a portion of the flow of the liquid conveyed to the at least one dispenser flow opening such that the substance is introduced into the volume of liquid in the interior cavity of the bathtub shell via the at least one dispenser flow opening and the dispenser assembly comprising a dispenser inlet disposed in the upper rim of the bathtub shell configured to provide access for placing the substance in the dispenser assembly; and a control panel configured to be operated to control the circulation system, the control panel being disposed on the upper rim of the bathtub shell adjacent to the dispenser inlet, the control panel being rotatably connected to the upper rim between a position exposing the dispenser inlet and a position covering the dispenser inlet. a bathtub shell defining an interior cavity configured to contain a volume of liquid, the bathtub shell comprising an upper rim at least partially surrounding the interior cavity and having at least one dispenser flow opening defined therein; a circulation system in communication with the interior cavity of the bathtub shell, the circulation system being configured to create a flow of the liquid to and from the interior cavity of the bathtub shell; a housing in fluid communication between the circulation system and the interior cavity of the bathtub shell, the housing being connected to the bathtub shell at the at least one dispenser flow opening and configured to convey at least a portion of the flow of the liquid created by the circulation system into the interior cavity of the bathtub shell through the at least one dispenser flow opening; a dispenser assembly in fluid communication between the circulation system and the housing, the dispenser assembly being configured to contain a substance therein and to expose the substance to the at least a portion of the flow of the liquid conveyed to the at least one dispenser flow opening such that the substance is introduced into the volume of liquid in the interior cavity of the bathtub shell via the at least one dispenser flow opening and the dispenser assembly comprising a dispenser inlet disposed in the upper rim of the bathtub shell configured to provide access for placing the substance in the dispenser assembly; and a control panel configured to be operated to control the circulation system, the control panel being disposed on the upper rim of the bathtub shell adjacent to the dispenser inlet, the control panel being rotatably connected to the upper rim between a position exposing the dispenser inlet and a position covering the dispenser inlet.