Red
Not the color
I just posted a pic of it o.o you can see no stairs and the outside has only got one floor.
Also: NO, AGATHA IS NOT IN LAVANDER TOWN! AND SHE ISN'T IN THE GAME EITHER! IF YOU WANT CONFIRMATION ON AGATHA/BERTHA, WAIT FOR 5th GEN!
5th Gen here we come..
Do you happen to have any Pallet Town up your sleeve?