Due to CoContest package concept, upload file limit, I made this "all-in-one" images, so you can see what it is about.
For detail view, please look at *.DWG file I attached, as it is very accurate, and precise, and easy to view.
I could not upload larger interior images along with DWG file.
Basically, you have 3 /three/ different schemes, Rev A/B/C and its proper appartments, from A to M.
You can switch and combine them on your own, as water and sewerage lines are respected well, you'll see in DWG file, every details, etc....
WALLS, when talking about walls, the bearing walls are un-touched, and dividing walls are all ruined, obviously.
So, thats all, I hope you'll find my revisions clear and easy to read.

Best Regards!