Great views of the Statue of Liberty, Brooklyn Bridge and the Manhattan skyline from different vantage points. The tour guide had a lot of good information.
The downside is that if you are on a crowded boat, there are people that don't listen to the instructions to keep conversations low and to not block the views of others for too long while you get your picture. Our boat had a large group of students, who talked loudly the entire time, making it hard to hear the tour guide at times. One family stood up and blocked the view on their side the entire boat ride. It was packed, so not much opportunity to move to get that view they were blocking. Not the tour company's fault.
Definitely book through Trip Advisor- rates are much cheaper!