Victorian S.R.O Turret 200 sq. ft.
While Brick Loft Studio 400 sq. ft. tested my ability to plan living space for 2, Victorian S.R.O Turret (though smaller) was far easier given it was just for 1. What was really hard was keeping the floor clear in such a small place. In its final form, the room had about 40 square feet of exposed floor area to move freely, which was a bit of a feat.
The room sat directly above a laundromat that hummed and purred during the day. S.R.Os do not have private bathrooms, but in place of the bathroom it did have an incredible all-bay-window turret, which meant zero privacy if the blinds weren't down but sunshine paradise otherwise.
The bed, by far the chunkiest object in the room, went straight into the turret. I highly recommend this as a rule (always get the biggest stuff out of the way first). The remaining non-bed furniture was positioned along the remaining walls (you didnt get to choose which) to leave aforementioned moving space in the middle. Bob (the vacuum robot) and Yellow Geometric Chair went to friends for safekeeping.
The nested coffee table was pulled apart into a single coffee table and patio side table, and has continued to reunite / disengage very nicely in subsequent moves. I strongly recommend considering a nested table set when / if you're thinking about infinitely customizable furniture.
I have lots of gratitude for Brick Loft Studio 400 sq. ft. and Columbia University Basement 250 sq. ft., without which I would not have learned my mirror and light lessons as well, and could not have made this space as habitable.