Public toilets in Seattle

Gender-neutral. On the second floor, it'll have a sign. You have to be a convention attendee

great burgers and milkshakes and 2 single stall gender neutral restrooms

Gender-neutral. In restaurant area lower level.

Gender-neutral. Visible from front door . customers only. Really yummy coffee.

First floor behind kitchen

Back of bar by arcade. You have to be 21+ with ID, but you don't have to buy anything. Restroom in in back of bar by arcade section

Gender-neutral. Main lobby, down the hallway next to the desks (not the elevators) to the left

Gender-neutral. Straight in the back. . I figure you have to be a paying customer, but their coffee is fantastic. They take coffee to an art form.