You didn't say what year your place was built but if it's old,it may not be as simple as new outlets. A lot of SF apartments have house wiring left over from the days when electricity was new to residences. Some of it was DC. A lot is "Knob and Tube", the days before romex. And certainly no one had 1500 watt hairdryers. That's why some rooms have one oulet and some none. No need! Grounded AC may have come along after that apartment was built.(In fact, if your place is really old you could have a live, capped gas line to where what used to be room lighting in your ceiling) Electrical service to that apartment may not be able to handle much. A grounding wire may be needed but that could be just the tip of the iceberg. And be certain that if your outlets have two wires only, no one took the time to check phase!! The good news: If you're renting a place built prior to 1979 you have rent control!