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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 ยท 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

H
hawkmom79
Verified booking
Couples
Standard Room
Stayed in Nov 29, 2025

"Great Stay"

10.0

We had a wonderful stay at Grassy Flats for our 20th wedding anniversary trip. Everyone was very welcoming, the room was clean, the bed was comfy, and the grounds are beautiful. We enjoyed our time chatting with Jeff at the tiki bar and his recommendations were spot on!

Helpful?
P
PatrickchCH
Verified booking
couple
Standard Room
Stayed in Nov 27, 2025

"Exceptional"

10.0
Helpful?
G
glandy1WASHINGTON DC, DISTRICT OF COLUMBIA
Verified booking
NONE
Standard Room
Stayed in Nov 25, 2025

"Fantastic Holiday Destination!"

10.0

My friend and I recently stayed at Grassy Flats for a fun long weekend getaway. The staff were all extremely friendly and helpful. The location is great and we look forward to staying here again in the future!

Helpful?
S
shariek2017
Verified booking
NONE
Standard Room
Stayed in Nov 23, 2025

"Wish we couldโ€™ve stayed longer!"

10.0

We were in the Keys for the Tour deKeys cycling event. Grassy Flats was the best hotel stay I have had in my recent memory. It checked all the boxes. I would recommend it for anyone planning to spend any time in the Keys. The service, accommodations and amenities were all top notch.

Helpful?
C
catherinetG2560XN
Verified booking
Couples
Standard Room
Stayed in Nov 22, 2025

"Conch House Accommodations"

6.0

We reserved a 2 BR suite in the Conch House and stayed in unit 31. The unit was situated on the top floor 3rd level in an older building with elevator service off the highway so a bit noisy. The unit is very dated but the 2 balconies afforded stunning waterfront and sunrise views. I would rate the grounds a 5. I would rate this Conch unit a 3. There were 2 plastic chairs with no seat cushion on each balcony. No table to place your coffee cup. Just not very inviting. Again the waterfront views made up for the lack of comfortable seating. The hotel staff were rated a 5: all very friendly and welcoming. The room just was very outdated. The fridge had no ice maker and there were empty ice trays inside the freezer. The coffee maker was an outdated version of a keurig with limited pods. This hotel could have easily offered complimentary coffee inside their store or at the reception area. The aquabana sat unused the entire time we were there. The beach is unswimmable due to shallow waters even at high tide and it has an odor. We didnโ€™t use any of the watercraft. We did visit Curry Hammock State Park and paid to use their kayaks. We kayaked through the mangroves and stopped at a sandbar. We highly recommend the state park. We did enjoy the rooftop restaurant with good food and live music. The waitstaff were very friendly and helpful. Unfortunately we will not come back for another stay here due mostly to the lackluster accommodations in the Conch House.

Helpful?
E
EmmagbGB
Verified booking
couple
Standard Room
Stayed in Nov 17, 2025

"Exceptional."

10.0

So clean and peaceful. The staff are the kindest people & super friendly.

No complaints about the property at all Not the properties fault but there are limited sun beds & people put towels down & didnโ€™t use them all day

Helpful?
L
lkelle2025EVANSVILLE, INDIANA
Verified booking
NONE
Standard Room
Stayed in Nov 16, 2025

"Great vacation"

10.0

This was a mother/daughter trip. The grounds are beautiful and everyone was so friendly. We were right next to the highway so was noisy at night. Only thing I would change in the unit itself would be take out the tub and install a walk in shower. I would recommend Grassy Flats to my friends and family.

Helpful?
K
KathyusUS
Verified booking
couple
Standard Room
Stayed in Nov 16, 2025

"Relaxing getaway with updated rooms with a view."

8.0

We stayed in the adults only building. Room was updated m,comfortable and very clean. There was a large balcony with a beautiful view of the ocean. There were two pools and a hot tub which were clean and well maintained along with a tiki bar with a friendly bartender. They have a restaurant and a top floor deck bar with live music which we enjoyed during our stay. This property is in a secluded area a few miles north of Marathon so was very quiet and relaxing. If the goal is a relaxing quiet trip, this is a great option. The room was exceptional and the staff was super friendly and accommodating.

The complex was pretty quiet at night with not a ton to do outside of the rooftop bar. Marathon has a light ordinance from dusk to dawn so being November when the sun sets by 545pm it was pretty dark and quiet in the complex without pool lights on so basically closed for use. Other times of year it wouldnโ€™t be a big deal. Marathon is a bit of a drive and doesnโ€™t have much of a โ€œdowntown โ€œ to walk around. Limited beach to sit by but enjoyable when not low tide(the ocean receded to the point it was mucky and had exposed islands). We werenโ€™t swimming in the ocean so it wasnโ€™t a huge deal and the view made up for this.

Helpful?
J
Janice Matthews usUS
Verified booking
couple
Standard Room
Stayed in Nov 16, 2025

"Exceptional"

10.0

The staff was very friendly and even left a sweet card for my husband and I for celebrating our 7th wedding anniversary there. The room was clean and spacious. The restaurants had amazing food and the store had everything we needed. I really liked the ocean view and my husband and I felt very relaxed. It was really nice the resort had extra curricular activities equipment we could use such as kayaks and bikes for use.

No complaints

Helpful?
7
7iy2e7mt7tCLERMONT, LAKE COUNTY, FLORIDA
Verified booking
NONE
Standard Room
Stayed in Nov 14, 2025

"Keys paradise"

10.0

We absolutely loved the rooms and the resort.Also having restaurants and a general store was a bonus. Everyone there was fantastic making the resort better.

Helpful?