In August I used Curt & Jody Swierk of Fort Camper Rental (www.FortCamperRental.com) and was very pleased. I paid via PayPal. They stayed in contact with me via cell phone and emails and co-ordinated the set up so it was all ready when i arrived.
They thought of everything: all dishes, linens, lighted outdoor wooden character so we could easily identify our site, porch chairs, awning lights, most of it was Disney themed. Best of all were the Disney DVDs and a game called Scene-It (TV-DVDs and game were on list of specially requested items I chose from the on-line lsit) which kept the teens well occupied. When we left, we just took our clothes and food and left them to pack up and haul away their pop-up. It was worth every penny (especially for the air conditioning in August in Florida!!!)and gave us a terrific, stress-free vacation.
We're going next August and using GreenbergRV. (Greenbergrvflorida.com). They came highly recommended on this site. They have new RVs, they're starting to get the 2014 models in. Rates are very reasonable. They do set up for you. They have been very quick to respond to any questions I have had. I'm looking forward to renting with them.