palatialness

/pəˈleɪʃəlnəs/
noun
  1. The quality or state of being like a palace; great size, luxury, or splendor.
    • Critics praised the palatialness of the film's set design, which recreated an ancient emperor's court.
    • The palatialness of the new hotel made every guest feel like royalty.
    • Even the smallest room in the mansion had a surprising palatialness.