Yes , of course you are right.
But I think that Ekaterine Palace in Catherine the Great's time was the same like AP during the reign of Nicholas:
There were public rooms and there were private rooms.
Just private rooms in those days were so shick, that it looked like public. Anyway strangers were not allowed to visit private room of Catherine the Great.
But in the 20th century the fashion has changed and
the home of the Tsar became almost the same thing as the home of the quite ordinary people. So we think now that it is more home like than Ekaterina Palace etc.