Great stay, responsive host and just 5min walk from the 181st Station. I spent 4 weeks here for an internship.
The bathroom has great warm water and perfect water pressure. Its a tiny bit mouldy though.
The room is small, but as described and it got a great view over the river. There's also a heater and additional blankets so you won't be cold.
Kitchen is useabel and will save you money if you cook for yourself instead of eating out. The fridge is really big!
The building has a doorman, laundry machines and elevators.
I would definitely come back and would recommend it to anyone who wants an affordable stay in New York.