Again, it's a matter of perspective. I've seen quite a few well designed 1 bath/1 bed places for 600 sq ft or less. Not hard for me to envision turning the bed

Again, it's a matter of perspective. I've seen quite a few well designed 1 bath/1 bed places for 600 sq ft or less. Not hard for me to envision turning the bedroom into another bathroom, with some space left over, and you've then hit pretty much all of your criteria.