57612 Overseas Highway

Mile Marker 57.5
Marathon, Fl. 33050

(305) 289-0265

Seashell beach resort logo


Brand New Heated Pool!


Vacation back in time where you don't need a watch!

2 story hotel building

beach resort cottage

Jump to our Resort Photo Gallery

The Seashell Beach Resort is located at Mile Marker 57.5 on sleepy Grassy Key, home of the original dolphin "Flipper," and just a few minutes from 'downtown' Marathon Key. We are a step back in time to the way things used to be in the Florida Keys. When you enter our you will feel like you are back in the "Old Florida Keys," but with all the modern conveniences.

We have two docks, one 300 feet long and the other 100 feet, stretching out into the beautiful Atlantic Ocean. The back reef of Hawk's Channel provides a natural shoreline and calm water for fishing or boating. Enjoy our complimentary kayaks. Experience spectacular views and our FREE morning coffee under our tiki hut. Sunrises are a specialty!

Create Special memories you won't find in a big resort.

We have only ten rooms so it's fun to meet everyone.


  • Most Rooms are Ocean Front
  • Standard Motel Rooms
  • Efficiencies
  • 1, 2 & 3 Bedroom Suites
  • Color Cable TV
  • Air Conditioning
  • Free Wi-Fi
Most accommodations have complete kitchens with microwave oven, refrigerator, conventional oven & range, sink and complete cooking & eating utensils.


All of our rooms are just a few feet away from our sandy beach.  Fix yourself a cocktail and stroll down to one of our tiki huts or just hang out in a beach chair. Experience the cool breezes while napping in one of our hammocks. It doesn't get more relaxing than this!

  • Check out our Photo Gallery.
  • The world famous Dolphin Research Center is just a little over a mile away.  You can actually swim with these truly amazing creatures.
  • Try the unique experience of casting for bonefish on our Bonefish flats - right at our resort!
  • SCUBA diving and snorkel charter boats are just minutes away, as well as a public golf course and shopping.
  • Key West is just  a short  57 miles away.  It is truly a beautiful drive over the historic bridges.
  • Grassy Key is the quiet island of Marathon Key, Florida.


beach hammock in the palm trees

dock beach palm trees

PAYMENT POLICY: A valid Visa or Mastercard guarantees your reservation from the moment the credit card number is received. Payment is due upon check in. No checks, please.

CANCELLATION POLICY: Because of our small size, cancellations affect us significantly, therefore we adhere to a strict cancellation policy of seven days prior to your arrival to avoid charges. During dates where a minimum length of stay (MLOS) is in effect, the 7 day cancellation policy still applies, and you will be liable for the total amount of the MLOS. There will be no exceptions.

CHECK-IN / CHECK-OUT TIME: We carefully prepare for each guest's arrival, so please remember... CHECK-OUT time is promptly at 10:00am. CHECK-IN time is 3:00pm. For late departures, a half day room rate will be charged. After 1:00 pm a full nights rate will be charged For arrivals past 6:00 PM local time, please call us for instructions on how to get into your room.

FOR MORE INFORMATION, CALL (305) 289-0265 or send us email.

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This memoir, written by the hotel owner, is now available on Amazon. Click here or use the button below to order "Hotelman Behind the Elegance" today.

"A memoir, a coming of age story, an exploration of father-son relationships, a social history and a how-to-succeed-in business book in one page-turning tome. Tim Brown writes about a unique time and place in Michigan lore, but his is a quintessential American story. It vividly and touchingly portrays a young man trying to wrest respect from his stern father, make his way in the world and find for himself a home. That he finally somehow succeeds at all three makes this a gratifying read." --Rick Skwiot, author of Fail

Free Wireless Internet - WiFi

Check out our other Florida Keys property just 7 miles away in the center of Marathon. Kingsail Resort Motel
offers a pool, ramp and dockage (by reservation only) and clean, comfortable rooms.

57612 Overseas Highway
Mile Marker 57.5
Marathon, Fl. 33050
(305) 289-0265