Sleeping/living in the office?
RobGR: A few points:1) If you at the point of considering living in your office, then you are past the point of worrying about social acceptability.  Don't pay attention to what we say, it sounds like you need to figure out if you will get away with it in your particular situation, and then just do it.2) I think if you are finding studios as expensive as private offices you need to broaden your search area a bit.  Generally it is cheaper, easier, and more socially acceptable to use living quarters as an office rather than the other way around.3) You are that your business idea requires you be in that expensive area ?  Maybe you could make a slight modification, and move to some foreclosure stricken area where you can rent a whole house more cheaply, and arrange with San Francisco friends to stay with them a few days a month to get done whatever you need to get done there ?4) I regard posts like this as signs of The Coming Economic Collapse.    ;)