So, I think it's been about 5 or 6 ingame days now since I paid Lydia 9500 gold to furnish my Lakeview Manor house, and it looks like about half of it has been furnished. Yet she's hardly touched the exterior of the house, and the second floor of the Main Hall.

How long in ingame days does it take to furnish the entire house? This is Entryway > Main Hall > Armory > Storage > Bedrooms.