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From459US$ /night
Check-in
04Dec2025Select date
Check-out
05Dec2025Select date
Rooms and Guests2 Guests, 1 Room
Key details

About the Hotel

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

Grassy Flats Resort & Beach Club - An eco-friendly boutique resort with oceanfront accommodations, sustainable dining, and water sports activities

Located on Grassy Key, this family-owned Marathon hotel emphasizes sustainable hospitality with zero-waste initiatives and organic gardening practices. The three-star Grassy Flats Resort features spacious accommodations across three distinct buildings: the adults-only Wreckers House, the Humidor House, and the Conch House. Room options range from king and double queen rooms to three-bedroom suites, each equipped with private balconies offering ocean, pool, or garden views. The property houses The Rhum House restaurant, serving locally-caught seafood from 5 PM to 9 PM daily, and the Barrel & Bale bar operating from 10 AM to 6 PM. Recreational amenities include complimentary kayaks, paddleboards, and access to water sports activities. The resort maintains an aeroponic garden system that grows herbs, vegetables, and tropical fruits for its restaurants. Situated 59 miles from Key West International Airport, Grassy Flats Resort & Beach Club provides proximity to attractions like the Dolphin Research Center, Florida Keys Aquarium Encounters, and Sombrero Beach.

Pros

Zero-waste bar initiative and sustainable dining practices

On-site aeroponic garden system produces fresh ingredients

Artist-in-residence program showcases local creativity

Complimentary water sports equipment included with stay

Cons

59 miles distance from Key West International Airport

No single-use amenities or vending machines available

View all

Select your room type

Cozy rooms, spacious suites, and family-friendly homes, all with flexible cancellation policies & special deals
Studio Ocean View Adults Only
2 persons
42 m² 
1 King-size bed
Ocean view
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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Price and room availability calendar

Check availability and rates for your selected dates!

Getting around

Easily find local transportation options to help you explore

City Centre
Marathon 10.0 km
Airports
Key West International (EYW) 90.1 km
Bus
Bus stop 13.3 km

Facilities

Enjoy premium amenities for a relaxing stay with your pet

General

  • No smoking on site
  • Free Wi-Fi
  • Free 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

At Grassy Flats Resort & Beach Club, dining options embrace local flavors and heartfelt culinary traditions. Guests can indulge in an array of delightful experiences, from refined evening meals to laid-back bites, all set against the backdrop of this tropical paradise.

The Rhum House - fine dining

Contemporary island cuisine
Ambiance
Elegant and intimate, adorned with local art and soft lighting, perfect for romantic evenings
Key Offerings
Signature dishes expertly crafted with a focus on local ingredients, elevating classic flavors; guests can enjoy carefully curated evening menus
Reservation
Recommended for dinner
Dinner only, 5:00 PM - 9:00 PM daily

Barrel & Bale

Innovative bar fare with a sustainability focus
Ambiance
Casual yet chic, featuring rustic decor and a vibrant atmosphere, ideal for social gatherings
Key Offerings
Craft cocktails and small plates, with an emphasis on creating a zero-waste environment; a unique selection of local brews enhances the experience
Reservation
Not needed
Hours vary; please check locally

Herbie's

Casual American eatery
Ambiance
Relaxed and friendly, with a cozy vibe, perfect for a casual meal after a day of adventure
Key Offerings
Classic burgers and crispy fries, along with refreshing drinks; an ideal spot for those seeking a quick and tasty bite
Reservation
Not needed
Hours vary; please check locally

Bongo's

Tropical-inspired bites and cocktails
Ambiance
An oasis brimming with vibrant fruit trees and aromatic herb gardens, offering a leisurely dining experience
Key Offerings
Refreshing tropical dishes and handcrafted cocktails, where the essence of the Keys shines through each creation; outdoor seating enhances the charm
Reservation
Not needed
Hours vary; please check locally

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
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
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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
FAQs
About Grassy Flats Resort & Beach Club
What are the check-in and check-out times at Grassy Flats Resort & Beach Club?
Check-in is from 16:00 and check-out is by 11:00.
How far is Grassy Flats Resort & Beach Club from Key West International Airport?
The hotel is located 95 km from Key West International Airport.
What dining options are available at Grassy Flats Resort & Beach Club?
The hotel features the Rhum House restaurant and an on-site bar, Barrel & Bale.
Is there a swimming pool at Grassy Flats Resort & Beach Club?
The hotel offers a heated saltwater pool that is open year-round.
What amenities are provided in the rooms at Grassy Flats Resort & Beach Club?
Rooms include air conditioning, a flat-screen TV, a seating area, and complimentary toiletries.
What recreational activities can guests enjoy at Grassy Flats Resort & Beach Club?
Guests can enjoy beach access, water sports facilities, and bicycle rentals.
How far is Grassy Flats Resort & Beach Club from the Dolphin Research Center?
The hotel is located about 15 km from the Dolphin Research Center.
Does Grassy Flats Resort & Beach Club offer free parking?
Yes, free private parking is available on-site without a reservation.
What languages are spoken by the staff at Grassy Flats Resort & Beach Club?
The staff speaks English.
What nearby attractions can guests visit from Grassy Flats Resort & Beach Club?
Nearby attractions include Florida Keys Aquarium Encounters (9 km) and Sombrero Beach (6 km).
What eco-friendly practices does Grassy Flats Resort & Beach Club implement?
The hotel practices include eliminating single-use plastics and herbi-cides and pesticides in their gardening.
Does Grassy Flats Resort & Beach Club provide internet access?
Free Wi-Fi is available throughout the property.

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