There still are a number of paternoster lifts in the city. I'm not going to tell you which one in particular I'm talking about. The time doesn't matter, but wait until someone gets on the lift in the cabin before you. A young man preferably, but any human will do. Get on the lift, cut yourself and use your blood to draw that S-shape everyone drew as a kid. It has to be your own blood and it has to be fresh.
Ignore the screams. Ignore any blood that may run down the walls. It's probably an illusion anyway. Yeah. An illusion. Don't touch it to make sure. You can get off then and you'll find yourself on a tropical island with very friendly people who will make you their king. Should they offer you any meat that night, it might be better not to eat it.
Make sure to mark the place where you first set foot on the island. Stay as long as you want. If you want to leave, return to the exact place you arrived and you'll be taken back. You cannot return.