Diana is a phenomenal host. I stayed with my best friend and we had some bad luck with transportation and cellphone service that caused us strife, but Diana was completely understanding and was there to help us every step of the way.
When it comes to directions, listen to Diana. We had NYC friends say we should take a certain subway to get to her place. Just take the 7 Train and you can get to her apartment and back without transferring.
It's maybe 10 minutes to get from her place to the subway station by foot. The house was clean and when we arrived on this hot and humid summer day, Diana greeted us with amazing Air Conditioning and bottled water.
If you need a place for your quick New York stay, I would definitely recommend Diana and her apartment.