While I had the second floor up during the dry build, I worked a bit on the layout of the rooms.  The rooms will be from left to right: the guest bedroom (in the two story addition), the stairway, the master bath (which is technically shared with the guest room), the master bedroom and then the conservatory (over the garage).

Since I flipped the stairs on the first level, I will need to close up part of the original hole in the ceiling to have room to put a door to the guest bedroom.  The second floor stairs will then go on the opposite wall from that door; you'll be able to see only the back of the stairs, except through the front windows.

In order to fit the second floor stairs in that position, I had to move the far wall forward over the porch.  This gave me more room inside the second floor and eliminated having a huge flat roof over the front porch extension.  Adding this extra space made planning the master bath difficult.

Can you actually have too large of a bathroom?  :D  Apparently so.

I placed the second floor walls so the two doorways were toward the open back.  The master bedroom wall has a second doorway leading into the middle of the bathroom.  I won't be using the porcelain pieces here (not a fan of the floral design on them), but they helped me figure out the layout.  They were part of the lot I bought from craigslist some time ago.

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The problem with this layout is that it leaves dead space toward the open back and an awkward set of doors, one on either side of the loo.

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This gave me the idea of putting in a removable wall, as I had done for the powder room, creating a hallway between the stairs and the master bedroom.

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Problem solved!  And, it created a cozy layout I was rather pleased with.  :D

There will be a door in the removable wall, a door leading to the master bedroom at the end of the hallway, and a door from the middle of the bathroom into the master bedroom.  The doorway from the stairs will be an open arch.