I have all the rooms available in my house but I don't plan on fully upgrading them, because some rooms I want to be small, but like the bedrooms and kitchens need to be bigger.
Yeah, my house is maxed out I don't really mind when villagers want to see the whole thing, it's a bit more time consuming but I usually just hustle them through all the rooms and then poke around on my phone until they leave hahaha