Here's upstairs...

Josiah's room would be the one pictured on the left. It's 10x12.

The bathroom is so cute. The sink is low enough to the floor that Josiah wouldn't even have to use a stool to brush his teeth or wash his hands.

The second room is really too small for a bedroom (8x12). Jay has plans to use it as the library/bonus room.

There's a little cove at the top of the stairs where Josiah's standing. And you can see that the stairs go down to the dining area.