Holly Bluff Marina offers houseboat rentals on the beautiful St. Johns River in Central Florida. The St. Johns River offers mile after mile of breathtaking view and pristine beauty. Spanish Moss draped trees line the banks of the river and the many lakes that dot the northerly course of the river. There is an abundance of wildlife: alligators, turtles, otter, deer, and raccoon. You may even see manatee (sea cows) grazing on the grasses along the river's shore.