The apartment was just as described, nice, comfortable and full equiped, ideal if you wish to have privacy at reasonable price while spending several days visiting NYC. Liberty State Park is quite close, so it is easy to take a ferry from there to Ellis Island and Liberty Island.
The commuting time to NYC is about 40'-60' depending on where you want to go. To reach NYC you need to take at least bus+path or walk 10'+light train+path (we mainly used this option as we did not see any bus passing near the apartment). Transport ticket is not integrated so you need to pay each transport mode separately. You can use Metrocard with path. Grove station is 45' walking or 6$ taxi from the apartment. There are always taxis in front of the Grove station. I would recommend the apartment if you wish to stay at least 4-5 days visiting NYC.