I just brought my new (1975 23 cc) Seacraft home from the keys this weekend. We stayed one night on Duck Key at a friends and one night in Key West where the boat was. Duck Key is very nice and family oriented. We where near the resort and marina. Last May me and a friend rented a room at the Kingsail Motel in Marathon. It was nice and clean and your boat is in a slip just feet from your door. I know they have a web-site...
www.marathonfla.com Regardless of where you stay you should definitely have lunch or dinner at Herbie's in Marathon. Great seafood and even better prices. Wish I could head back down soon but I have a boat to restore. Enjoy your trip!!
CMB