Back around 2006 we stayed at the SUGARLOAF KEY KOA. Had a great time there. Expensive then, I don't have any idea what the prices are now. Packed in like sardines, just enough room to open my awning and slideout (inches apart) but the swimming was good, the pool delightful and an on-site bar with soft mellow entertainment. On their TV, we watched a good snowstorm hit beautiful downtown NJ...and had another drink to celebrate. Were there 3 days. DEFINITELY advise to get reservations no matter where you choose to stay. Around 130 miles or so from Miami, there is only one road in and one road out. You'll want to know you have somewhere to stay.
15 miles from Key West, we had no problem parking our "toad" and toured the island. Don't miss the sunset and street entertainers.