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Hotels in Grassy Key

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Rainbow Bend Resort

Rainbow Bend Resort

2.5 out of 5
57784 Overseas Hwy Marathon FL
  • 22 min walk from Dolphin Research Center
Book a stay at this beach hotel in Marathon. Enjoy a private beach, daily housekeeping, and a garden. Our guests praise the breakfast and the helpful staff in ...
8.2/10 Very Good! (1,000 reviews)
"This is not the time to travel.The beach is covered with seaweeds.The smell is horrible.It enters the room.I am allergic to iodine and was coughing and with a sore throat.Could not use the kayaks because did not want to enter the contaminated water."

Reviewed on Jun 24, 2026

Rainbow Bend Resort
Grassy Flats Resort & Beach Club

Grassy Flats Resort & Beach Club

4 out of 5
58182 Overseas Hwy Marathon FL
  • 14 min walk from Dolphin Research Center
Stay at this hotel in Marathon. Enjoy free WiFi, free parking, and 2 outdoor pools. Our guests praise the helpful staff and the property condition in our reviews. ...
9.4/10 Exceptional! (463 reviews)
"Tv Remote didn’t work. Phone didn’t work. As a solo traveler didnt love that I couldnt reach the front desk. Calling from a cell phone, rang and rang then hung up. Had to go down to the front desk for anything needed. Beach amenities were non-existent. Restaurant completely ignored me when seated ..."

Reviewed on Jun 26, 2026

Grassy Flats Resort & Beach Club
Gulf View Waterfront Resort

Gulf View Waterfront Resort

2.5 out of 5
58743 OVERSEAS HWY Marathon FL
  • 4 min walk from Dolphin Research Center
Stay at this hotel in Marathon. Enjoy free WiFi, free parking, and daily housekeeping. Our guests praise the helpful staff and the clean rooms in our reviews. ...
8.4/10 Very Good! (589 reviews)
"Love it"

Reviewed on Jun 26, 2026

Gulf View Waterfront Resort
Isla Bella Beach Resort & Spa

Isla Bella Beach Resort & Spa

5 out of 5
1 Knights Key Boulevard Marathon FL
  • 29 min drive from Dolphin Research Center
Book a stay at this luxury hotel in Marathon. Enjoy free WiFi, 5 outdoor pools, and a full-service spa. Our guests praise the pool and the helpful staff in our ...
9.2/10 Wonderful! (1,175 reviews)
"The grounds were lush and serene with 5 beautiful pools, white sand and colorful flowers. The rooms were impeccable with an amazing view from the balcony. 20/10 recommendation!"

Reviewed on Jun 26, 2026

Isla Bella Beach Resort & Spa
Lime Tree Bay Resort

Lime Tree Bay Resort

3.5 out of 5
68500 Overseas Hwy Long Key FL
  • 23 min drive from Dolphin Research Center
Book a stay at this beach resort in Long Key. Enjoy free WiFi, free parking, and 3 outdoor pools. Our guests praise the pool and the helpful staff in our reviews. ...
9.2/10 Wonderful! (1,340 reviews)
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Reviewed on Jun 26, 2026

Lime Tree Bay Resort
Hawks Cay Resort

Hawks Cay Resort

4 out of 5
61 Hawks Cay Blvd Marathon FL
  • 6 min drive from Dolphin Research Center
Book a stay at this luxury hotel in Marathon. Enjoy free WiFi, 3 outdoor pools, and a full-service spa. Our guests praise the pool and the helpful staff in our ...
8.2/10 Very Good! (1,001 reviews)
"The property is good but the rooms need to be upkept better. We rented three rooms and one of them smelled pretty bad like a wet smell the other room drain was not working too good. We found the breakfast extremely bad, expensive and with little offerings. The pool area bar and lobby were nice and ..."

Reviewed on Jun 26, 2026

Hawks Cay Resort
Fairfield Inn & Suites by Marriott Marathon Florida Keys

Fairfield Inn & Suites by Marriott Marathon Florida Keys

3 out of 5
13201 Overseas Hwy Marathon FL
  • 13 min drive from Dolphin Research Center
Book a stay at this business-friendly hotel in Marathon. Enjoy free breakfast, free WiFi, and 2 outdoor pools. Our guests praise the breakfast and the restaurant ...
9.2/10 Wonderful! (1,163 reviews)
"Front desk staff was amazing, the pool was perfect and food so delicious in walking distance"

Reviewed on Jun 26, 2026

Fairfield Inn & Suites by Marriott Marathon Florida Keys
Faro Blanco Resort Marathon Florida Keys, Curio by Hilton

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton

4 out of 5
1996 Overseas Highway Marathon FL
  • 26 min drive from Dolphin Research Center
Book a stay at this spa resort in Marathon. Enjoy free WiFi, 4 outdoor pools, and a full-service spa. Our guests praise the pool and the restaurant in our reviews. ...
8.6/10 Excellent! (1,163 reviews)
"The room and dining were very good. Unfortunately a 20 to 30 people showed up at the pool with a boom box and coolers and were celebrating Fathers Day by eating cake and food in the pool along with the 5 or 6 unsupervised children jumping in and out of the pool. I know never to stay at this resort ..."

Reviewed on Jun 25, 2026

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton
Courtyard by Marriott Faro Blanco Resort, Marathon Florida Keys

Courtyard by Marriott Faro Blanco Resort, Marathon Florida Keys

3 out of 5
2146 Overseas Hwy Marathon FL
  • 26 min drive from Dolphin Research Center
Book a stay at this beach hotel in Marathon. Enjoy free WiFi, 2 outdoor pools, and a beach locale. Our guests praise the pool and the helpful staff in our reviews. ...
9/10 Wonderful! (1,006 reviews)
"The property was very clean very well located, and the staff was wonderful. My problem is with their description of some of the amenities. In the ad, they mention self parking it doesn’t mention that it’s $20 a day unless you tap on where it says parking also nowhere on the ad does it say that there ..."

Reviewed on Jun 26, 2026

Courtyard by Marriott Faro Blanco Resort, Marathon Florida Keys
Tranquility Bay Beachfront Hotel and Resort

Tranquility Bay Beachfront Hotel and Resort

4 out of 5
2600 Overseas Hwy Marathon FL
  • 26 min drive from Dolphin Research Center
Book a stay at this beach hotel in Marathon. Enjoy free WiFi, free parking, and 3 outdoor pools. Our guests praise the pool and the helpful staff in our reviews. ...
8.8/10 Excellent! (1,002 reviews)
"Beautiful, peaceful place to enjoy with a family. Beautiful back porches, landscaping and a great Cuban coffee shop across the street :)"

Reviewed on Jun 23, 2026

Tranquility Bay Beachfront Hotel and Resort
Banana Bay Resort & Marina

Banana Bay Resort & Marina

3 out of 5
4590 Overseas Highway Marathon FL
  • 23 min drive from Dolphin Research Center
Book a stay at this golf hotel in Marathon. Enjoy free breakfast, a marina, and free bicycles on site. Our guests praise the pool and the helpful staff in our ...
7.6/10 Good! (1,001 reviews)
"It’s not a resort it’s more an overpriced hotel. When we booked it we were told it would be an additional $118 when we arrived, upon arrival we were charged $226. There was no poolside bar they have a” bar “ by the marina that’s supposed to be open from 5-11 it was only open for about 3 hours one ..."

Reviewed on Jun 27, 2026

Banana Bay Resort & Marina
Coconut Cay Resort & Marina

Coconut Cay Resort & Marina

3 out of 5
7196 Overseas Highway Marathon FL
  • 20 min drive from Dolphin Research Center
Stay at this hotel in Marathon. Enjoy free WiFi, free parking, and a marina. Our guests praise the helpful staff and the clean rooms in our reviews. Popular ...
8.4/10 Very Good! (1,031 reviews)
"Bastante tranquilo 👍"

Reviewed on Jun 26, 2026

Coconut Cay Resort & Marina
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.

Find cheap hotels in Grassy Key

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Frequently Asked Questions About Grassy Key hotels

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How many hotels are there in Grassy Key?

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