309 attic
If one built a nice enough box for a full queen sized bed with built in shelves and light and power etc it would be like the bottom half of a bunk bed. Ductwork could run under it and behind it, even over the top of it, and be invisible. Furnace room would be behind it. This might be space inefficient and expensive... depending what would NOT have to be done.
The baskets between the studs show storage space, but how fiddly it must be to put drywall right down to the floor. Surely easier to make triangular boxes like a card dealer's "shoe" and have either stacked drawers or cabinets.
Q