Liberty Harbour is high priced for a very tight parking lot, no sewer hookups but a dump. However, can't be beat for location ease when exploring NYC. Stayed there a couple of years back for 3 days/nights, but only slept in the RV and was out all days and nights.
We would definitely stay there again for the pure easy access into NYC, and intend to do so for maybe up to a week to explore moreso. We also enjoyed walking the immediate surrounding area outside of Liberty Harbour, the coffee shops, fishing areas etc.