You can either pee in the sink, or out the window. The window overlooks an alley behind 5th St, and most of the time nobody walks below you. Even if you do piss on someone, you are on the 7th floor so they will probably have no idea where it came from. By the time it hits them, you will most likely be zipped up and have the window shut. The sink has a garbage disposal in case you need to take a dump.