Beachfront pool area with lounge chairs, palm trees, and turquoise ocean view
Resort pool deck with wooden lounge chairs, palm trees, and multi-story hotel building
Beachfront resort building with white railings, multiple balconies, pool, and palm trees
Family gathering under white inflatable shade structure on shallow water
Beachfront resort pool with thatched cabana, palm trees, and turquoise ocean
Bright hotel bedroom with king bed, wood furniture, ocean view balcony, and ceiling fan
Resort suite living room with blue sofa, balcony doors, and flat-screen TV
Tropical resort bedroom with two queen beds, wood headboards, balcony access, and ocean-view windows
Beachfront covered deck with lounge chairs overlooking ocean, palm trees, and pool
Beachfront resort pool with lounge chairs, thatched-roof bar, palm trees, and ocean view
Turquoise tropical home with pool, lounge chairs, thatched bar structure, and manicured lawn
Inflatable AquaBanas float with family in shallow ocean water, multiple floats visible in background
Thatched-roof tropical bar with wooden counter, stone wall, and oceanfront railing
Beachfront tiki bar with wooden barrel tables, ocean view, and thatch roof structure
Aerial view of waterfront resort property with pools and palm tree landscaping
Overhead view of small pool with blue loungers and palm shadows on paved deck
Three-story residential building with white railings and palm trees, featuring screened ground level and pool access
Turquoise hotel building with white railings, pool deck with lounge chairs and blue umbrellas

18 photos, view gallery

Grassy Flats Resort & Beach Club

5.0 (8)

Marathon, Florida

3 star property

If you're looking for sunny, adventure-filled days, and warm, breezy evenings sipping cocktails oceanside, you've found your perfect day spot in the Florida Keys. Enjoy multiple pools, water activities, comfortable accommodations, and food and drink choices. With a blend of modern amenities and historical charm, Grassy Flats Resort & Beach Club offers a unique "olde Florida" experience.

Select a date

Experiences

Day Pass

Dive into Keys living with beach access, two pools, a hot tub, and complimentary kayaks and paddle boards.

Day Pass

$55

AquaBana

Float the day away in a shaded inflatable cabana just off the shoreline, perfect for watching kite and eFoil action.

AquaBana

$99

Only 1 left

6 guests

Day Room

Recharge between beach sessions in a private room with a work desk, then head back to the pools or shoreline.

Day Room

$159

Only 2 left

4 guests

Property details

Location

58182 Overseas Hwy, Marathon, FL 33050

(opens in new tab)

Amenities

Beach Access

Hot Tub

Free Parking

Towels

Luggage Storage

Pool

Food Service

Drink Service

Pool

Daily sunrise - sunset

Bales Away Beach Bar

Monday - Tuesday 10:00am - 6:00pm

Wednesday - Sunday 10:00am - 9:00pm

Live Music Wednesday - Sunday 5:00pm - 8:00pm

Rhum House

Daily 5:00pm - 9:00pm

Good to know

What happens when I get there?

Check in at the front desk with your confirmation and a photo ID — the same way any hotel guest would. The hotel knows you’re coming.

What’s included in the price listed?

Your booking covers everything listed on the experience page — no hidden fees. Some properties offer food, drinks, or extras you can add on once you're there, but nothing is required unless noted.

Can I cancel if my plans change?

Yes, most bookings can be canceled for a full refund. Cancellation windows and refund eligibility details are found on the experience page. Read our full cancellation policy.

Reviews