Grassy Key

Travel Guide

A dolphin swimming near a wooden dock and a tree branch in the water.
A beach with clear turquoise water, surrounded by lush green trees and a distant shoreline with buildings.
A calm bay with clear turquoise water, surrounded by lush green vegetation and a sandy beach.
A building with a blue awning labeled "Dolphin Research Center" and a dolphin logo.
A dolphin sculpture and a sign for the Dolphin Research Center.
Rainbow Bend Resort

Rainbow Bend Resort

2.5 out of 5
57784 Overseas Hwy Marathon FL
The price is RM420 per night from 5 Nov to 6 Nov
RM420
RM655 total
5 Nov - 6 Nov
includes taxes & fees
Stay at this beach hotel in Marathon. Enjoy free breakfast, free Wi-Fi and free parking. Our guests praise the breakfast and the helpful staff in their reviews. ...
8.2/10 Very good! (1,000 reviews)
"Nice accommodations. Very casual Quiet"

Reviewed on 27 Oct 2026

Rainbow Bend Resort
Gulf View Waterfront Resort

Gulf View Waterfront Resort

2.5 out of 5
58743 OVERSEAS HWY Marathon FL
The price is RM490 per night from 2 Dec to 3 Dec
RM490
RM552 total
2 Dec - 3 Dec
includes taxes & fees
Stay at this hotel in Marathon. Enjoy free Wi-Fi, free parking and daily housekeeping. Our guests praise the helpful staff and the clean rooms in their reviews. ...
Gulf View Waterfront Resort
Grassy Flats Resort & Beach Club

Grassy Flats Resort & Beach Club

4 out of 5
58182 Overseas Hwy Marathon FL
The price is RM746 per night from 1 Dec to 2 Dec
RM746
RM1,034 total
1 Dec - 2 Dec
includes taxes & fees
Stay at this hotel in Marathon. Enjoy free Wi-Fi, free parking and 2 outdoor pools. Our guests praise the helpful staff and the property condition in their reviews. ...
9.4/10 Exceptional! (502 reviews)
"Overall, I had a very pleasant stay, and everything was great. However, I was a little disappointed with the late check-out policy. I noticed that many rooms appeared to be unoccupied, so I asked if I could stay just one extra hour. Unfortunately, I was told that it wasn’t possible. I found this ..."

Reviewed on 1 Nov 2026

Grassy Flats Resort & Beach Club
See all 2,339 properties in Grassy Key
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
Yacht Haven Marina

Yacht Haven Marina

3.5 out of 5
5 Sombrero Blvd Marathon FL
Stay at this houseboat in Marathon. Enjoy free Wi-Fi, free parking and a picnic area. Our guests praise the helpful staff in their reviews. Popular attractions ...
9.6/10 Exceptional! (380 reviews)
"Very clean and comfortable beds. Great position in marathon. Effective a/c. Highly recommended"

Reviewed on 1 Nov 2026

Yacht Haven Marina
Skipjack Resort & Marina

Skipjack Resort & Marina

3 out of 5
19 Sombrero Blvd Marathon FL
Stay at this golf aparthotel in Marathon. Enjoy free parking, a marina and a fitness centre. Our guests praise the breakfast and the pool in their reviews. Popular ...
Skipjack Resort & Marina
Tropical Cottages

Tropical Cottages

3 out of 5
243 61st Street Gulf Marathon FL
Stay at this cottage in Marathon. Enjoy free parking, daily housekeeping and a garden. Popular attractions Sombrero Beach and Seven Mile Bridge are located ...
8.6/10 Excellent! (1,013 reviews)
"The family running the food truck and tiki hut were great. Felt like we were guests in their home."

Reviewed on 30 Oct 2026

Tropical Cottages
See all properties in Grassy Key
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Things to do

Mangroves and Manatees - Guided Kayak Eco Tour

Mangroves and Manatees - Guided Kayak Eco Tour

RM282
per adult
92% of travellers recommend
Mangroves and Manatees - Guided Kayak Eco Tour
Sunset Cruise

Sunset Cruise

RM364
per adult
100% of travellers recommend
Sunset Cruise
Sandbar Adventure Cruise in the Florida Keys

Sandbar Adventure Cruise in the Florida Keys

RM354
per adult
100% of travellers recommend
Sandbar Adventure Cruise in the Florida Keys
Marathon: Rhum Runner Aqua Park Adventure

Marathon: Rhum Runner Aqua Park Adventure

RM154
per adult
Marathon: Rhum Runner Aqua Park Adventure
Marathon FL Sandbar Cruise & Sightseeing Adventure

Marathon FL Sandbar Cruise & Sightseeing Adventure

RM465
per adult
100% of travellers recommend
Marathon FL Sandbar Cruise & Sightseeing Adventure
Day Sailing Adventure in the Florida Marine Sanctuary

Day Sailing Adventure in the Florida Marine Sanctuary

RM490
per adult
100% of travellers recommend
Day Sailing Adventure in the Florida Marine Sanctuary
See all activities in Grassy Key

Explore a world of travel with Expedia