I made my way up one flight to the floor where I had gotten a great deal on a salad a few months ago. I followed the signs and paid my shekel. That got me into a very acceptable, clean-smelling public toilet fully equipped with paper, soap, etc.
The management of the building, which is a mini-mall, seems to be taking their job seriously. Each time I'm more impressed. They are updating the way they should be.
I no longer use the building as a bus station, because our buses don't leave from inside. But there are plenty of stores and mostly fast-food or budget eateries worth patronizing. There are security guards outside, who mostly profile. Some people put their bags through the xrays.
There are a number of public toilets in the building. Look for signs or ask.