Bathtub can be said as the main bathroom appliance. But, it is not a must. Some bathrooms might not have the bathtub inside because of some considerations. In the minimalist bathroom for example, actually you can still add the bathtub inside. You can use the corner area of bathroom, and then install the corner bathtub. Do you have the idea of applying the bathtub for two? This idea is actually familiar for those who are just the married couple. This is quite different with the common bathtub since it can be used for two persons. With this type of bathroom appliance, they can do soaking together, and then having a relaxation.