Yilin's place is extremely well located, a few hundred feet from Central Park, the subway, and Columbia University. As described, very safe and quiet neighborhood and building.
Our bedroom was clean, the rest of the apartment was a little dirty, but I emailed Yilin about it and we managed to solve the problem.
The air conditioning worked perfectly, which is great in the summer! The washing machine was very useful too, as well as the new towels and toothbrushes.
I definitely recommend this place, very rare to find such an affordable room in Manhattan. Thanks Yilin!