Jim N.
10/25/2025
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...
Grassy Flats Resort & Beach Club
(39)
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58182 Overseas Hwy
Marathon, FL 33050
Check-in: 4 PM, Check-out: 11 AM
Located in Marathon, 5.3 miles from Florida Keys Aquarium Encounters, Grassy Flats Resort & Beach Club provides accommodations with an outdoor swimming pool, free private parking, a restaurant and a bar. This 3-star hotel offers an ATM, a concierge service and free WiFi. Guests can use the hot tub, or enjoy sea views. All rooms at the hotel are equipped with a seating area. Complete with a private bathroom equipped with a shower and free toiletries, guest rooms at Grassy Flats Resort & Beach Club have a flat-screen TV and air conditioning, and selected rooms contain a balcony. The rooms will provide guests with a fridge. Upper Matecumbe Key is 24 miles from the accommodation, while Theater of the Sea on Islamorada is 26 miles away. Key West International Airport is 55 miles from the property.
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Reviews
4.539 reviews
Carolyn J.
7/6/2025
I stayed here with some friends for my birthday. The hotel is right on the water which is amazing. The hotel has 2 pools and a private beach. The adults only section is a bit more renovated. Where...
Nicole C.
9/20/2025
We chose Grassy Flats to spend a couple of nights during our visit to the keys to celebrate our 30th anniversary. We arrived and were greeted immediately. Staff was very pleasant. She gave us a...
Jim D.
4/27/2025
My wife and I stayed at Grassy Flats in Marathon FL. We stayed the week of April 11-18th. This was our third year. The resort is amazing. A true hidden gem. The staff was excellent. We met Marvin...
Monica M.
8/28/2025
Very clean rooms everyone was very nice but we had a bad experience with the mosquitoes. We had two different rooms and my sautéed and I got it so much by the mosquitos we could t use our balcony....
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