Walk-in from 7th Avenue, head IMMEDIATELY to the right, where the elevators are. Make eye contact with no one. Take the elevator up to the Lobby Level. Exit left, hug the wall, and there's your glorious restroom. Be mindful that The Renaissance just went through a major reno, and one of the features is dark lighting (oxymoron!) so it may be hard to find this toilet the first time. But trust me, it has saved me from embarrassment more than once, and it's worth keeping in your back pocket. Ahem.