Stayed a whole month at J's place with my family and we couldn't have had a better experience. J's parents were fantastic and helped us with all the queries and needs we had throughout the stay. J was also very attentive and willing to help. The apartment in itself is in great state and offers comfort due to its large size, very uncommon in New York. Although the distance to reach Manhattan is something you should consider, the metro station is only one block away, making public transportation very accessible.
I would recommend this place to anyone, especially people coming in sizable groups.