Selina Chelsea is good (not great) for location and value, at under $200/night and on Manhattan, although a 1/2 mile from any subway stop.
Check-in was poor. We had to wait several minutes to have anyone show up at the desk. Then, they checked us in and sent us to a room - a room which someone was occupying! We went back to the desk and they gave us a new room. By this time, we basically missed the free welcome drinks at the bar.
Amenities were poor. They didn't have a hairdryer in our room the first day. When I told them, they also could not locate a hairdryer for me. How do you not have enough hairdryers for your rooms?!
Rooms are ... odd. The lighting is TERRIBLE. If you want a room where you feel like it is always bedtime, this is good for you. It hurt my eyes to be in there, which is why I guess you go to New York City, to not be in your overpriced matchbox sized room.
Bathroom was extremely odd. The rooms seem to have been built without them, and then they added the bathroom/shower in the corner with a see-through wall. Do not travel here with someone who you aren't already comfortable with seeing you shower. You are not visible on the toilet from the room, as long as you close the shower curtain. Your roommates will be able to hear you use the bathroom. Bathroom lighting is dim, and you have to choose between having the mirror/lamp plugged in verses a hairdryer in the single outlet in the bathroom.
I don't think I would stay here again. The price was good for Manhattan, but the overall experience was pretty odd. Staff were a mix of friendly and standoffish. They did hold our luggage at the end, and they didn't lose anything. We didn't see rats and there wasn't anything gross.
However, we put a "do not disturb" sign on the door each day, and they still came in and cleaned up the room. I would have preferred they respected our wish to have privacy. I do not like having staff enter my room if I haven't put away electronics and expensive items. We did not have an issue but this was against our wishes.