My husband and I booked a night here the day of, because we decided to stay an additional night in the city. I didn't see before booking that it was a shared bathroom/toilet situation. It wasn't as dirty as it could have been, but maybe we were lucky. My husband told me that the mattress was dirty under the fitted sheet, but I didn't check.
There is no sign with the name of the hostel. To get in the building, we called the "receptionist" who doesn't have a desk anywhere. He's somewhere in the building and you call his phone number if you need towels or something. He was nice but he smelled strongly, like he hadn't showered in a while and wasn't wearing deodorant. Sorry to write this out, man.
What I really disliked was the fact that our room was a loft. So you enter the room and there's a small space with a little wardrobe and desk, a window, and the mattress is actually on top of a brief flight of stairs. The bed is right at the edge of the stairs. I was worried about falling over the mattress and in the stairs, so my husband slept on that side. That was unbelievable that someone would risk installing guests like that without caring of the human, legal, and financial consequences of someone falling.
Oh well. Welcome to New York!