This Airbnb is excellent value for money. Negra is a responsive, exceptional host.
The location is close to Manhattan, the neighborhood is safe, the space is good for two people, clean, close to the subway.
Just a couple things for future renters:
Heating is central and automated. If it's too cold just message Negra and she will happily adjust the temp from her end. The heating pipes do make noise, but so do all in New York.
The subway station at 46th st is literally less than a minute walk. Note however, that after around 9pm, the subway lines wont stop there, they'll stop earlier at about 34th st. It's a quick walk or a cheap Lyft back.
This apartment is a basement apartment, the tenant above is quiet and considerate. Realistically though, you will hear footsteps, this isn't an issue if you don't sleep in.
Overall it was an excellent stay, at an excellent location with an excellent host.