Apart from online reviews, what else do you use to choose a particular institution of study? I always advise people to get in touch with alumni and find out more from them. That way, you can get the real picture on the ground.
First, decide how close to home you want to be. Next, decide if you would like living in a particular state/city for the next four years. Then go see the campus. If they offer overnight visits, do that. Take to professors and students while you are visiting. Think about class size. Do you want a big class or smaller classes? Do they offer any major you could possibly want. For example, don't go to a school without a nursing program if you think you'd like to pursue nursing. Finally, it's just a feeling. When you find your school, you'll know.
If you're going to attend classes on campus, a tour is best especially if you're going to live on campus, too. For online classes, the reputation of the university would be a crucial consideration. I agree that recommendations from current or former students can be a deciding factor for any university whether the classes are online or on campus.