My wife and I are planning a trip to the Ft. Myers Beach/Sanibel/Captiva area. The two hotels we've narrowed our search down to the Residence Inn Ft. Myers Sanibel and the Sanibel Harbour Marriott Resort and Spa. Any suggestions? We plan to do traveling around to the islands and also to spend a little time at the pool. Does anyone know how much it costs to go over to Sanibel?