- CRYSTAL BAY RESORT & MARINA YOUR HOME IN THE FLORIDA KEYS Located at Mile Marker 49 in beautiful Marathon, Florida (Vaca Key) (Just after Wendys Restaurant on the right and across the street from Boaters World ) Peace for some...Fun for others!! Deutsch Free Mini Golf Course - Heated Fresh Water Pool - Marina with Boat Ramps - Beautiful Sandy Beach - Fishing - Childrens Playground - Picnic Area ...www.crystalbayresort.com