The vibe at Alexander Springs Campground
Drop some Alexander Springs Campground knowledge on us.
This is a nice spring with a large swimming area and sunbathing/picnic area. The spring flows into a beautiful clear, shallow river for canoeing and kayaking. There is a short board-walk trail through the "jungle" and there is also access to the Florida Trail near the campground entrance, which is a hiking trail that runs the length of the state. The only problem I had with this campground is you may not bring your pets into the picnic/beach area including the parking lot. You may not even leave them in your car in the parking lot, and the park ranger was very rude and mean about this. You can have pets in campsite, but if you wanted to just stop in for a quick swim, can't do it with a pet.
This was the first place I camped after moving to FL a couple of years ago, and after exploring other places it remains my favorite. There is plenty of hiking accessible right from the park, you can fish (not in the spring head itself but a little farther down), the campsites are spacious and shaded by a nice canopy of trees, and the water is just beautiful.
We had 4 people in 2 tents with 3 dogs felt like we had plenty of room.
I recommend going in the cooler season. You may need a wetsuit jacket (for the air temp more than water temp), but you can pretty much have the water to yourself unlike the craziness of the summer season.