I spent two months give or take at Ying's place. Very good location: Jersey City is close to Downtown Manhattan and her place is just a three minute walk from the Jersey City light rail, convenient and mostly reliable.
The room is cozy and big, especially for New York City area standards. I shared the bathroom/shower/kitchen with another girl, who was friendly and very quiet.
Ying replies to every inquire or request you might have, she's been a great host.