If you want to visit Gai Lou, you may also say its location, prosperity, convenient transportation, convenient shopping and complete service facilities. But anyone who already lives in this apartment can live in that room at will. Your mother actually let the servant live in a big house and put her sister in the servant's room. My mother was fooled by Mr. Feng Shui.
You live like this now, and comfort your mother slowly. She will change her mind.