We're facing towards a bunch of glass windows, take a few steps towards the second set of windows, turn towards the right... Take a few steps further, you'll be facing towards an area that has lockers on the left, walk towards that area... On the right there's a counter with a sink and there are cabinets as well... Take a few steps further... You'll be facing towards a door that appears to have a bathroom sign, on top there's an exit sign, and that's your destination.