The apartment was so clean it looked brand new!
I stayed for around 12 days with 3 other people and it was really good, I would absolutely come back. 6 people might also be fine, but more than that it could get too tight.
It's very well located (under 10 min to most subway lines and maybe 15 to Time Square), and there's a store where you can buy anything you might need right next to the entrance. The street seemed safe, we didn't have any issues.
Since it's in a third floor the noise from the streets can be a bit loud at times during the night. If you're a very light sleeper it could be an issue, but we were fine with it.
It was also a bit uncomfortable to have lunch or dinner at the apartment because there's no table, but we managed fine, not a deal breaker at all.