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9.1 / 10 Guest Rating

Grassy Flats Resort & Beach Club

58182 Overseas Hwy,Marathon FL 3305, Marathon, us

Grassy Flats Resort & Beach Club - main view

About the Property

Luxurious Accommodation with Spectacular Views
Experience a slice of paradise at Grassy Flats Resort & Beach Club in Marathon. Indulge in pool views from every room, relax on the sun terrace, and unwind in the hot tub. Top-Notch Amenities for Ultimate Comfort Enjoy air-conditioned rooms with sea view balconies, flat-screen TVs, and fully equipped kitchens in selected units. The hotel also offers an outdoor pool, free parking, a garden, and a restaurant for your convenience. Unwind and Explore Take advantage of the barbecue facilities, concierge service, and ATM on-site. With easy access to nearby attractions like Florida Keys Aquarium Encounters, your stay at Grassy Flats Resort & Beach Club will be unforgettable. Book now for a dreamy getaway!

Facilities & Amenities

Offsite parking discounted rates available
Parking
Non-smoking rooms
Air conditioning
Swimming pool
Restaurant
Family rooms
Pets allowed
Lift / Elevator
Express check-in/check-out

Important Information

Check-in & Out

Check-in
Check-out11:00 AM

Property Notes

Guests are required to show a photo ID and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply. Please inform of your expected arrival time in advance. You can use the Special Requests box when booking, or contact the property directly using the contact details in your confirmation. Guests under the age of 18 can only check in with a parent or official guardian. A deposit may be required at the property.

Check Room Availability

1 night · 2 adults

No rooms available

We couldn't find any available rooms for these dates and guests. Try adjusting your search criteria.

Guest Reviews

9.1
Exceptional736 verified reviews
AI Summary

Guests highly rate the clean and well-maintained and frequently praise the friendly and helpful staff.

Categories

Cleanliness9.0
Service9.4
Location9.4
Room Quality8.5
Amenities9.3
Value for Money8.7
Food and Beverage9.1
Overall Experience9.3

Select topics to read reviews

E
ElizabethusUS
Verified booking
couple
Standard Room
Stayed in Oct 29, 2025

"Exceptional"

10.0
Helpful?
E
ElizabethusUS
Verified booking
couple
Standard Room
Stayed in Oct 29, 2025

"Exceptional"

10.0

The resort was nice, it had everything we needed. The staff was very friendly and helpful.

Helpful?
J
JoanusUS
Verified booking
couple
Standard Room
Stayed in Oct 28, 2025

"Exceptional"

10.0

Beautiful property

N/A

Helpful?
J
jimnabholzAUSTIN, TEXAS
Verified booking
Family
Standard Room
Stayed in Oct 25, 2025

"First-Class Resort, Marathon Key"

10.0

Easily one of the biggest hidden gems on Marathon Key … literally hidden because aside from the non-descript sign on the highway, the dense tropical foliage hides the place! Get past that and you find a first-class resort, dense beautiful tropical gardens, great staff, all the perks one wants in a Keys resort… pool, bar, water sports, super nice/clean rooms, plenty of parking! Mia helped us check in and gave us the property tour, did a great job… thanks Mia. Complimentary prosecco upon check-in! Nice little gift shop at the office. The resident cat Wilma will follow you around, so be aware, she’ll join you for bed! Family and adults sides to the resort, which is nice. Only had one night this time around, but we’ll be back for sure! Highly recommend!

Helpful?
A
AndrédeDE
Verified booking
family_with_children
Standard Room
Stayed in Oct 24, 2025

"Nett als Zwischenübernachtung"

6.0

Wie durften schon abgestürzt 13 Uhr ins Appartment.

Kühlschrank extrem laut. Die Klimaanlage musste ausgeschaltet werden, auch tagsüber weil zu laut. Die Klimanlage vom Appartment darunter war zu hören. Es roch am Pool nach verfaulten Eiern.

Helpful?
R
rosaesES
Verified booking
couple
Standard Room
Stayed in Oct 20, 2025

"Very Good"

7.0

Es muy bonito y tranquilo pero el mobiliario y la ropa de cama y las instalaciones están muy desgastadas

Helpful?
K
kpweber777
Verified booking
NONE
Standard Room
Stayed in Oct 15, 2025

"Beautiful and fun Spot!"

10.0

We stayed for 4 days and enjoyed all the amenities. Beach, aqua park, eating and lounging. Gorgeous spot on directly on the water. Customer service was excellent!!

Helpful?
K
KethicerusUS
Verified booking
family_with_children
Standard Room
Stayed in Oct 7, 2025

"Un lugar para relajarse con el sonido del mar"

10.0

Muy buena hubicacion. Relax. Atención excelente

Las instalaciones necesitan mantenimiento y la playa esta muy sucia

Helpful?
I
IRENEusUS
Verified booking
extended_group
Standard Room
Stayed in Oct 6, 2025

"Exceptional"

10.0
Helpful?
R
Rolando
Verified booking
Standard Room
Stayed in Oct 6, 2025

"Exceptional"

10.0

The place is beautiful and very relaxing the staff very nice and accommodating the only thing that needs updating is the mattresses not very comfortable other than that is a hidden gem

Helpful?
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