dont want to diss your fantasy.. seems you put alot of time into drawing it up. and then doing some other studies around it.

BUT..
 a 3 floor balcony and high ceilings for communial area. but then small bedrooms squeezed into the corners.. WHY!
heck even the kitchen area looks only big enough for a microwave and a 2 person breakfast bar

anyways back to the main issue.. the 12foot x 10foot bedroom.

average good size bed for a couple is 7x7. so thats only 3foot from the footstand of the bed to the door(7-10)
and if you centered the bed against the wall. thats only 5foot either side.(7-12)

sorry but i think a few months of that boxroom(cell) and people will be hoping to do the 3 floor dive to the ground. head first.
even a prison cell needs 7foorx10foot for a single prisonmate room..

dont squeeze things into corners just to have a 30foot high ceiling in the main communial area.
people would be happier with a 20foot high ceiling and then massive bedrooms on the top floor

i cant see you being a project/finance manager of any project. but just from a design point of view.. c'mon kid try a lil better

try to have it where people dont have to walk 100metres just to lay in a 4metre long box bedroom