Bahia Honda State Park

One of the best deals and spots in the Keys. Affordable for the area, you get access to a beautiful beach and park (especially great in the mornings and evenings after the crowds head out), and they even give you a free bag of ice and a drink per crew member each day that you stay. Good power and water access. The bus between Marathon and Key West is easily accessible from the park. Friendly staff. Only wish could have done the transaction online to save some paperwork and time registering and can ease some of the questions raised in the reviews on Navionics that they're hard to get a hold of.