It's bang on the Main Road from Penn Station next to a 7 11 and there's a small maroon vertical banner which reads Chelsea cabins. If you're reaching very late like I did, remember to not talk in your phones as there's a time curfew. Lovely little kitchen with fruits like strawberries, blueberries, toast, jam, butters, breads, milks etc being readied and it's a standing area in midst of thr room. Very friendly vibe. Shared bath and toilets.