A beach with clear water, palm trees, and people relaxing on the sand.

Find Adults Only Resorts & Hotels in Marathon, FL

  • Change your mind

    Book hotels with free cancellation
  • Treat yourself

    Sign in to save 10% or more on thousands of hotels
    Sign in
  • Be picky

    Search almost a million properties worldwide

Check availability on Marathon Adults Only Resorts & Hotels

Tonight
Aug 10 - Aug 11
Tomorrow
Aug 11 - Aug 12
This weekend
Aug 14 - Aug 16
Next weekend
Aug 21 - Aug 23

Our top choices for Marathon adults-only hotels

1. Casa Morada

Casa Morada
Matecumbe
United States
Lois
NT$4,361
NT$5,270 total
includes taxes & fees
Aug 31 - Sep 1
Casa Morada
View all properties

Find out more about Marathon

Discover top Marathon attractions

Marathon, Florida, is a paradise of adventure and relaxation, perfect for quality-seeking travelers. Start your exploration at the iconic Dolphin Research Center, where you can engage with these intelligent creatures in interactive programs, creating unforgettable memories for both adults and kids. Next, venture to Sombrero Beach, known for its pristine sand and clear waters, ideal for a family day filled with sunbathing, beach games, and snorkeling among colorful fish. For a unique experience, visit the Turtle Hospital, where you can learn about sea turtle rehabilitation and even meet the residents up close. Don't miss out on a sunset cruise through the picturesque waters of the Florida Keys, offering stunning views and a chance to spot dolphins in their natural habitat. After a day of adventures, consider staying in the heart of Marathon's vibrant community near the Seven Mile Bridge, where a range of hotels offer comfortable accommodations with easy access to local dining and entertainment. Here, you can unwind in style, enjoying amenities such as pools and beachfront access, ensuring your family feels pampered while you experience the best of what Marathon has to offer.

Top Marathon Hotel Reviews

Tranquility Bay Beachfront Hotel and Resort

Tranquility Bay Beachfront Hotel and Resort

10/10 Excellent
"Great vacation resort. Only issue was that the tiki restaurant is open to public and a homeless man was there asking for money. Think they should make the beach area and tiki restaurant exclusive to the people in resort."
Vanessa 3-night trip
Posted 12 hours ago
Tranquility Bay Beachfront Hotel and Resort

Explore a world of travel with Expedia