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12Jan2026Select date
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Rooms and Guests2 Guests, 1 Room
Key details

Overview & Features

58182 Overseas Hwy,Marathon Fl 3305, Marathon, Florida, United States, FL 33050
-
Near Sombrero Beach
Great
8.8
9.4
/10
4.8
/5

Oceanfront Accommodations

Grassy Flats Resort & Beach Club offers seven room types across three buildings. Options include the Galleon Suite with wraparound ocean views, the Wreckers House for adults only, and family-friendly Conch House suites with full kitchens. All rooms have private balconies overlooking the Atlantic Ocean, butterfly gardens, or the pool. Amenities include high-speed Wi-Fi, plush bedding, and keyless entry. The Three Bedroom Suite sleeps six with two king beds, one queen bed, and three balconies.

Onsite Dining

The Rhum House serves locally caught seafood and handcrafted cocktails with oceanfront seating. Barrel & Bale, the resort's zero-waste bar, offers tropical drinks and compostable garnishes. Breakfast, lunch, and dinner feature ingredients from the resort's aeroponic gardens, including Grassy Key bananas and herbs. The Rhum House operates from 5 PM to 10 PM on weekends, while Barrel & Bale is open from 10 AM to 6 PM daily.

Water Sports & Activities

Guests can kiteboard, eFoil, or kayak in the Gulf of Mexico, with paddleboards and kayaks included in stays. Curry Hammock State Park, 1.5 km away, offers hiking trails and snorkeling. The Dolphin Research Center, 1 km from the resort, provides interactive programs. Onsite, the Lagoon Saloon Surf Shoppe rents gear for wakeboarding and sailing.

Grassy Key Location

The resort is on Grassy Key, 95 km from Key West International Airport. Nearby landmarks include Sombrero Beach (3 km), the Turtle Hospital (2 km), and Seven Mile Bridge (1.5 km). Marathon's dining options, like Herbie's sports bar, are a 5-minute drive. The property is surrounded by a natural seawater lagoon and composting gardens.

Eco-Conscious Services

Grassy Flats eliminates single-use plastics, offering refillable toiletries and filtered water stations. The Seaweed Composting Program repurposes beach debris for gardens. Artists in Residency decorate rooms with local artwork. Concierge services arrange fishing charters and guided tours. In-room packages include prosecco and tropical flower arrangements. Parking and Wi-Fi are complimentary.

“Grassy Flats impressed me with its commitment to sustainability, from eliminating single-use plastics to its zero-waste bar. It's a rare find where environmental consciousness meets genuine hospitality, making it ideal for vacationers and friends; the complimentary kayaks and paddleboards sealed it for me. I also noted the adults-only pool, which offers a tranquil escape, balancing the family-oriented vibe with a touch of serenity.”
Hotel logo
Edward HayesEditor-in-Chief at Beachresort
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Pick the Room Type That Suits You

Choose from spacious beach suites, family rooms, or cosy couples’ retreats with perks like breakfast and free cancellation
Studio Ocean View Adults Only
2 persons
42 m² 
1 King-size bed
Shower
Heating
Deluxe King Studio Adults Only
2 persons
46 m² 
1 King-size bed
Shower
Heating
Standard Double Room Adults Only
2 persons
46 m² 
2 King Size Beds
Shower
Heating
King Studio Adults Only
2 persons
46 m² 
1 King-size bed
Shower
Heating
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Facilities

Enjoy comfortable stays and unforgettable experiences at our beach resorts

General

  • No smoking on site
  • Free 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
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Dining Onsite

Grassy Flats Resort & Beach Club offers a delightful culinary journey with its onsite dining options, featuring flavors inspired by the local region. From fine dining experiences to casual bites surrounded by nature, guests can indulge in a variety of settings and specialties that truly reflect the vibrant spirit of the Florida Keys.

The Rhum House - fine dining

Contemporary American fine dining
Ambiance
An elegant setting with a warm, inviting atmosphere, perfect for special occasions or intimate dinners.
Key Offerings
Delight in a carefully curated menu, prepared with passion, showcasing seasonal ingredients and local flavors. Guests can savor meticulously crafted dishes in an ambiance that radiates relaxation and fine taste.
Reservation
Recommended
Open for dinner from 5:00 PM to 9:00 PM, daily.

Barrel & Bale

Bar and lounge
Ambiance
A casual and lively bar atmosphere aiming for sustainability, where every patron can enjoy delightful beverages in a welcoming space.
Key Offerings
Experience the innovative concept of a zero-waste bar, serving creatively crafted drinks that reflect the ethos of sustainability, ensuring that every sip is both refreshing and mindful.
Reservation
Not needed
Hours vary.

Herbie's

Casual dining
Ambiance
A laid-back setting perfect for socializing and unwinding over good food and drink.
Key Offerings
Indulge in hearty plates featuring classic brews and crispy fries, ideal for a quick bite or a relaxed meal in a friendly atmosphere.
Reservation
Not needed
Hours vary.

Bongo's

Tropical-inspired eatery
Ambiance
Nestled among lush fruit trees and herb gardens, this dining venue embodies a tranquil oasis vibe.
Key Offerings
Enjoy fresh, vibrant dishes that celebrate local produce, alongside a cozy atmosphere that invites guests to savor nature's bounty.
Reservation
Not needed
Hours vary.

Location & Nearby Attractions

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
Nearby
58901 Overseas Hwy
Dolphin Research Center
920 m
Key Vaca
1.0 km
Restaurants
Grassy Key Outpost
40 m
58152 Overseas Hwy
Hideaway Cafe
600 m
57784 Overseas Hwy Rainbow Bend Resort
Explore Marathon
Local Highlights Near Grassy Flats Resort & Beach Club
Top Attractions
Activities
Dining
Entertainment
Dolphin Research Center
Dolphin Research Center
12 minutes' walk
Dolphin Research Center offers engaging interactions and educational programs with dolphins and other marine life.
Seven Mile Bridge
Seven Mile Bridge
5 minutes' drive
Seven Mile Bridge features stunning views and a scenic path for cycling or walking along one of the longest bridges in the U.S.
Curry Hammock State Park
Curry Hammock State Park
5 minutes' drive
Curry Hammock State Park provides nature trails, beach access, and opportunities for kayaking amidst beautiful natural scenery.
Sunset Bay Park on Grassy Key
20 minutes' walk
Sunset Bay Park features serene waterfront views, picnic areas, and great spots for watching the sunset over the Gulf.
Water Sports at Keys Cable Park
20 minutes' walk
Keys Cable Park offers exhilarating wakeboarding and water sports with rentals available onsite for all skill levels.
Relaxation at The Calm Waters Spa
50 minutes' drive
The Calm Waters Spa provides various wellness treatments in a tranquil setting, perfect for relaxation and rejuvenation.
Grassy Key Outpost
5 minutes' walk
Casual waterfront dining at Grassy Key Outpost features local seafood specials and a laid-back atmosphere overlooking the water.
Hideaway Cafe
Hideaway Cafe
8 minutes' walk
Hideaway Cafe offers a cozy vibe with a seafood-centric menu and signature dishes, perfect for a romantic dinner or family meal.
Live Music at the Brass Monkey
10 minutes' drive
The Brass Monkey features live music events and a lively atmosphere, ideal for enjoying a night out with friends or family.
Marathon Community Theatre
10 minutes' drive
Marathon Community Theatre offers diverse performances throughout the year, making it a great option for arts and culture lovers.
Getting around beach destinations
City Centre
Marathon15 min  ·  10.0 km
Airports
Key West International Airport (EYW)136 min  ·  90.1 km
Bus
Bus stop20 min  ·  13.3 km
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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
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
Questions of the users
About Grassy Flats Resort & Beach Club
What differentiates Conch House from Wrecker House in terms of available views, especially for a King Studio?
10 November 2024
Both Conch House and Wreckers House feature balconies overlooking the pool and the Atlantic, but neither offers a direct view of the Gulf.
Are any of the accommodations located directly on the beach?
15 December 2024
Yes, all accommodations are beachfront, providing easy access to the sandy shore.
Can guests swim in the beach area, and is it sandy or rocky?
23 October 2024
Yes, the beach area is swimmable with soft sand, perfect for a relaxing day by the water.
Is there any live music entertainment available at the resort?
12 January 2025
Live music is offered during special events, but there are currently no regular performances. Follow along on social media for updates.
What is the policy if a hurricane occurs during a booked stay?
14 February 2025
Guests have the option to reschedule their stay in the event of a hurricane.
Is there a hot tub available for guests to enjoy?
8 March 2025
Yes, there is an outdoor hot tub located in the Adults Only pool area.
What are the operational hours for the pool and the tiki bar at the resort?
20 April 2025
The pool is open from sunrise to sunset, while the tiki bar operates until 18:00 and the restaurant bar until 22:00.
How far is the designated smoking area from the accommodations?
3 May 2025
There is a designated smoking area near the beach and dock, conveniently just a short distance from guest rooms.
Are pets allowed on the property, and is there a fee for bringing them?
15 June 2025
Dogs are welcome for a fee of $50 per night, and they can roam the beach and property, but not in the pool area.
Is breakfast included in the stay, and what are the typical offerings?
22 July 2025
Breakfast is served on-site daily from 07:00 to 11:00, and there are no extra fees associated with the stay.
Are there opportunities to rent kayaks or paddleboards during the stay?
27 August 2025
Complimentary kayaks and paddleboards are available for guests to enjoy during their stay at no extra cost.
Is there a specific age requirement for guests wishing to use the adults-only facilities?
14 September 2025
Guests must be 21 years or older to access the adults-only building and pool.
Can guests walk along the beach or access nearby walking trails?
30 October 2025
Yes, guests can enjoy walking along the beach and access a scenic trail across the street from the resort.

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