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United States
Marathon
Grassy Flats Resort & Beach Club
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—up to 10% cheaper
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Check rooms and rates
From510US$ /night
Check-in
10Mar2026Select date
Check-out
11Mar2026Select date
Rooms and Guests2 Guests, 1 Room
Key details

About the Hotel

58182 Overseas Hwy,Marathon Fl 3305, Marathon, Florida, United States, FL 33050
-
Near Sombrero Beach
Great
8.8
9.4
/10
4.7
/5

Loved by Grassy Flats Resort & Beach Club guests

  • Adults-only pool
  • Friendly staff
  • Delicious cocktails
  • Beautiful views
"We loved that there was an adult only pool and hot tub - separate family friendly area - and both had lifts."
Mark from United States
read full review
"Beautiful views from our balcony, the rooftop breakfast patio, and pool Tiki bar."
Janice from United States
read full review
"They include free paddle boards and kayaks."
Victoria from United States
read full review

Accommodations

Grassy Flats Resort & Beach Club offers a variety of oceanfront accommodations with seven room types to cater to different guest needs. The Galleon Suites include wraparound corner windows for expansive views, while the Three Bedroom Suites comfortably host up to six guests. The Wreckers House, an adults-only building, provides a stylish setting that reflects the storied history of maritime salvagers in the Florida Keys.

Eco-Friendly Commitment

The hotel operates with a strong dedication to sustainability, employing measures to eliminate single-use plastics and harmful materials. The Grassy Grown initiative promotes growing fresh produce for the restaurant, utilizing organic composting to support this effort. Guests contribute to environmental preservation through the Seaweed Composting Program which enriches the hotel's organic gardens.

Diverse Dining Experience

The Rhum House serves upscale dining, featuring locally caught seafood and hand-crafted cocktails in an oceanfront setting. Guests can enjoy a thoughtful selection of wines from family-owned wineries that emphasize organic and sustainable practices. Dining hours extend daily, ensuring that each meal showcases the best ingredients sourced from the Florida Keys.

Adventure and Activities

Grassy Flats Resort provides access to various action-packed water sports, including kiteboarding, eFoiling, and paddleboarding. Kayaks and paddleboards are included with every stay, allowing guests to explore the surrounding ecosystem freely. Biking and other leisurely activities are also available, catering to all levels of adventure seekers.

Artist in Residency Program

The Artists in Residency program allows local artists to showcase their creativity within the Conch House, enriching the cultural atmosphere of the resort. This initiative invites guests to connect with local art and experience the creative spirit of the Florida Keys. The program emphasizes the importance of art in the community, making it a unique aspect of the hotel's offerings.

Highlights

Location: Eco-friendly boutique resort on Grassy Key .

Accommodations: Seven room types with oceanfront views .

Dining: The Rhum House serving locally caught seafood .

Adventure: Action water sports including kiteboarding and eFoiling .

Eco-Friendly: Grassy Grown Initiative and Seaweed Composting Program .

“Sustainability meets hospitality at this beachfront property; kayaks and paddleboards are complimentary, inviting guests to explore the waters. The zero-waste bar and elimination of single-use plastics underscore a commitment to the environment. I found the adults-only pool particularly appealing-a tranquil escape.”
Hotel logo
James DavidEditor-in-Chief at Cheaphotels
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Select your room type

The hotel provides a selection of rooms—doubles, family rooms, and suites—with perks like free cancellation, breakfast options, and great value deals
Studio Ocean View Adults Only
Studio Ocean View Adults Only
2 persons
455 sq. feet 
1 King-size bed
Shower
Heating
room details
Deluxe King Studio Adults Only
Deluxe King Studio Adults Only
2 persons
500 sq. feet 
1 King-size bed
Shower
Heating
room details
Standard Double Room Adults Only
Standard Double Room Adults Only
2 persons
500 sq. feet 
2 King Size Beds
Shower
Heating
room details
King Studio Adults Only
King Studio Adults Only
2 persons
500 sq. feet 
1 King-size bed
Shower
Heating
room details
Click button to see more rooms
Show all rooms
Show all roomsLess

Room rates & availability calendar

See the best prices and book your dates today!

Amenities & services

Real traveler stories and honest reviews—no glossy ads, just authentic feedback to guide your booking
Facilities: Great
8.9/10Review score

General

  • No smoking on site
  • Wi-Fi
  • Parking
  • Safe deposit box
  • Express check-in/ -out
  • Concierge desk
  • Pets allowed
  • Rooms/ Facilities for disabled
  • Wheelchair access
  • Lift
  • ATM/Cash machine
  • Coffee shop
  • Fireplace
  • Smoke detectors
  • Fire extinguishers
  • Key card access
  • Key access

Sports & Fitness

  • Wind surfing

Guest Parking

  • Electric kettle
  • Cookware/ Kitchen utensils

Services

  • Housekeeping
  • Welcome drink
  • Happy hour

Dining

  • Restaurant
  • Poolside snack bar

Children

  • Board games

Facilities for people with disabilities

  • Toilet for disabled

Spa & Leisure

  • Saltwater pool
  • Beach umbrellas
  • Sun loungers
  • Aqua park
  • Jacuzzi
  • Pool with view
  • Shallow end

Room features

  • Air conditioning
  • Heating
  • Sitting area
  • Garden furniture
  • Tea and coffee facilities
  • Dining table

Bathroom

  • Free toiletries
  • Sink

Self-catering

  • Electric kettle
  • Cookware/ Kitchen utensils

Media

  • Flat-screen TV

Room decor

  • Parquet floor
Show more

Dining Onsite

Grassy Flats Resort & Beach Club offers an array of delightful dining options that highlight local flavors in stunning surroundings. From elegant fine dining to casual spots infused with the spirit of the Keys, every meal promises an authentic taste of the region.

The Rhum House - fine dining

Caribbean-inspired fine dining
Ambiance
An elegant setting with a tranquil atmosphere, perfect for romantic dinners or special occasions.
Key Offerings
Featuring a concise menu crafted with care, dining here includes a selection of expertly prepared dishes that showcase the region's culinary influences. Open for dinner with an emphasis on sustainability and quality.
Reservation
recommended
17:00 - 21:00 daily

Barrel & Bale

Casual bar with a focus on local brews
Ambiance
A laid-back environment designed for relaxation, ideal for unwinding after a day of exploration.
Key Offerings
With a goal of zero waste, this unique bar highlights local craft beers and artisanal cocktails made from fresh, local ingredients, creating a responsible yet playful drinking experience.
Reservation
not needed
Hours vary

Herbie's

Casual dining with a focus on pub fare
Ambiance
A fun, vibrant space where visitors can relax and socialize.
Key Offerings
Known for delicious brews and crispy fries, Herbie's offers a true taste of casual dining amidst the lively pulse of the Keys.
Reservation
not needed
Hours vary

Bongo's

Garden-fresh casual dining
Ambiance
An inviting oasis surrounded by tropical fruit trees and herb gardens, providing a serene dining experience.
Key Offerings
Focusing on fresh ingredients from the garden, Bongo's delivers vibrant dishes that celebrate local produce, making every meal a refreshing experience.
Reservation
not needed
Hours vary

Grassy Flats Resort & Beach Club Location

58182 Overseas Hwy,Marathon Fl 3305, Marathon, Florida, United States, FL 33050
Map view
58182 Overseas Hwy,Marathon Fl 3305, Marathon, Florida, United States, FL 33050
City landmarks
Landmark
Dolphin Research Center
3100 ft
Bridge
Seven Mile Bridge
4400 ft
Park
Curry Hammock State Park
4400 ft
Landmark
Key Vaca
3300 ft
Island
Grassy Key
5100 ft
Landmark
Keys Cable Park
1.1 mi
Landmark
Sunset Bay Park on Grassy Key
1.1 mi
Island
Crawl Key
1.8 mi
Landmark
Squirrels Key Camp
1.7 mi
Island
Long Point Key
2.1 mi
Island
Little Crawl Key
2.3 mi
Landmark
Hawks Cay Boulevard
2.8 mi
Landmark
Sundance Watersports
2.9 mi
Spa Centre
The Calm Waters Spa
3.0 mi
Nearby
58901 Overseas Hwy
Dolphin Research Center
3100 ft
Key Vaca
3300 ft
Restaurants
Grassy Key Outpost
200 ft
58152 Overseas Hwy
Hideaway Cafe
2000 ft
57784 Overseas Hwy Rainbow Bend Resort
Explore Marathon
Local Highlights
Top Attractions
Activities
Dining
Entertainment
Dolphin Research Center
Dolphin Research Center
12 minutes' walk
Dolphin Research Center offers interactive experiences with dolphins. Enjoy educational programs and marine life exhibits.
Seven Mile Bridge
Seven Mile Bridge
16 minutes' walk
Famous for its stunning views, Seven Mile Bridge is perfect for a scenic stroll or a photo opportunity against the blue waters.
Curry Hammock State Park
Curry Hammock State Park
16 minutes' walk
This beautiful park features sandy beaches and nature trails, ideal for birdwatching, picnicking, and relaxing in nature.
Key Vaca
13 minutes' walk
Key Vaca offers beautiful waterfront views and is a great spot for kayaking and exploring local wildlife in a serene setting.
Snorkeling Tours
5-minute drive
Guided snorkeling tours provide an adrenaline rush while exploring vibrant marine life. Equipment rentals available.
Kayaking at Curry Hammock
16 minutes' walk
Curry Hammock State Park allows for peaceful kayaking through mangroves and clear waters, perfect for relaxation and wildlife spotting.
Keys Cable Park
20 minutes' walk
This exciting park features cable wakeboarding, making it great for thrill-seekers of all skill levels looking for adrenaline.
Grassy Key Outpost
5 minutes' walk
A casual eatery known for fresh seafood and local specialties, with a cozy atmosphere and outdoor seating.
Hideaway Cafe
Hideaway Cafe
8 minutes' walk
This waterfront cafe serves delicious breakfast and brunch, featuring locally sourced ingredients in a relaxed, friendly environment.
Sunset Bay Park
20 minutes' walk
A perfect spot for family picnics and sunset viewing, this park hosts community events and offers a serene beach atmosphere.
Local Bars
5-minute drive
Vibrant nightlife options featuring live music, karaoke nights, and craft cocktails cater to all ages and tastes.
Getting around town
City Centre
Marathon15 min  ·  6.2 mi
Airports
Key West International Airport (EYW)136 min  ·  56.1 mi
Bus
Bus stop20 min  ·  8.3 mi
Looking for early-bird discounts?
Get special discounted rates today!
Check Rates
Property information and rules
Check-in
from 16:00-21:00
Check-out
from 07:00-11:00
Guest Parking
Private parking is possible on site for free.
Internet
Wireless internet is available in for free.
Children & extra beds
There are no cots provided in a room. 
Pets
Pets are allowed on request.
Number of rooms:
38

Reviews and Ratings

What past guests shared about their stay
Review score
Based on 450 verified reviews
8.9/10
Great
92%
Recommend
Breakfast
7.5/10
Cleanliness
9.1/10
Comfort
9.1/10
Facilities
8.9/10
Free Wi-Fi
8.5/10
Location
8.9/10
Paid Wi-Fi
6.9/10
Staff
9.4/10
Value for money
8.3/10
Pros
Private access
Friendly staff
Sea view
Spa pool
Free paddleboards
Cons
Dirty condo
Eroded beach
Weak coffee
Road noise
Guest reviews
based on 694 reviews
8.8/10
No reviews yet on our siteUnfortunately, our guests have not yet left any reviews for this hotel, but you can read reviews from Booking.com.
Open reviews
FAQs
About Grassy Flats Resort & Beach Club
What time is check-in and check-out at Grassy Flats Resort & Beach Club?
Check-in is at 16:00 and check-out is at 11:00.
Is on-site parking available at Grassy Flats Resort & Beach Club?
Free private parking is available on-site without the need for a reservation.
What amenities are offered in the rooms at Grassy Flats Resort & Beach Club?
Rooms include air conditioning, a flat-screen TV with cable channels, seating areas, and private bathrooms with free toiletries.
What dining options are available at Grassy Flats Resort & Beach Club?
The on-site restaurant, Rhum House, offers a casual dining menu while the Barrel & Bale bar serves cocktails and beverages.
What recreational facilities does Grassy Flats Resort & Beach Club provide?
Guests can enjoy an outdoor heated pool, hot tub, and access to water sports facilities.
What nearby attractions are close to Grassy Flats Resort & Beach Club?
Nearby attractions include Dolphin Research Center (4 km), Florida Keys Aquarium Encounters (9 km), and Sombrero Beach (6 km).
How far is Grassy Flats Resort & Beach Club from the nearest airport?
The hotel is 89 km from Key West International Airport.
Does Grassy Flats Resort & Beach Club provide free Wi-Fi?
Yes, free Wi-Fi is available throughout the property.
What type of swimming pools are available at Grassy Flats Resort & Beach Club?
Guests have access to a saltwater pool that is open year-round and features beach chairs and umbrellas.

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Check-in
10Mar2026Select date
Check-out
11Mar2026Select date
Rooms and Guests2 Guests, 1 Room
  • Overview
  • Rooms
  • Price calendar
  • Amenities & services
  • Location
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