The Decorator (1965)

A respected but struggling interior decorator from a wealthy background moves in with some of her clients in order to meet their specific needs. In the process, she tends to become friends with the families and get drawn into their personal problems. In the pilot episode, she's hired by an oil tycoon to lavishly decorate a house on his property for his daughter and future son-in-law, secretly hoping that the obvious expense will cause the fiancé' to back out of the wedding.

Unfortunately the movie The Decorator is not yet available on HBO Max.