
I know legally they have to provide a space for you to pump that is not a bathroom, however, I have been pumping in a bathroom for both of my LO's. It is a single room, quiet, and has a lock on the door. I roll a large comfy office chair in and set my pump up on the counter. It is very convenient to be able to wash my hands right before pumping and then rinse out my stuff afterwards.
I guess just decide what you are comfortable with. If you aren't comfortable with the bathroom, then I would speak up and say so.