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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! (932 reviews)
Pretty bare minimum. No instruction on operating tv. Air conditioner didn’t work very well. The bottles of shampoo and shower soap were empty.

Reviewed on Apr 25, 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! (435 reviews)
Great property, my only complaint was we had the same room with a couple we were traveling with and asked to be next to each other, they said they couldn't we had one room in between us even though nobody was in the other rooms. So Boo on you!!

Reviewed on Apr 21, 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! (567 reviews)
Room was clean, bed was comfortable. Not a great location for beaches/attractions but we were just passing through so it worked out.

Reviewed on Apr 23, 2026

Gulf View Waterfront 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 ...
8/10 Very Good! (1,004 reviews)
This was a perfect family-friendly vacation spot! The kids loved the pool and the lagoon! The Family Oasis room was perfect for our family! A king sized bed for Mom and Dad and bunkbeds for the kids to have their own space. The room was clean and stocked with towels, toilet paper, and bathroom essentials. ...

Reviewed on Apr 25, 2026

Hawks Cay 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! (1,130 reviews)
Staff is great and goes and beyond to ensure your stay is relaxing and comfortable. Beautiful property!

Reviewed on Apr 25, 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! (1,249 reviews)
Our stay at Lime Tree was perfect. The staff was extremely friendly and helpful. The amenities were great whether you are active or just want to chill. Our room was a top floor waterfront with balcony. The sunsets were spectacular, definitely the room to book! The room and resort had everything needed ...

Reviewed on Apr 26, 2026

Lime Tree Bay Resort
Kingsail Resort

Kingsail Resort

2 out of 5
7050 Overseas Highway Marathon FL
  • 20 min drive from Dolphin Research Center
Stay at this motel in Marathon. Enjoy free WiFi, free parking, and a marina. Our guests praise the helpful staff and the clean rooms in our reviews. Popular ...
8.6/10 Excellent! (1,044 reviews)
Small island hotel , very clean, really liked it, will be back again

Reviewed on Apr 25, 2026

Kingsail Resort
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! (1,000 reviews)
EVERYTHING GOOD

Reviewed on Apr 20, 2026

Courtyard by Marriott Faro Blanco Resort, Marathon Florida Keys
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! (1,118 reviews)
Great resort with all amenities. Pool, bar, restaurant all wonderful.

Reviewed on Apr 24, 2026

Fairfield Inn & Suites by Marriott 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. ...
Tranquility Bay Beachfront Hotel and Resort
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! (1,026 reviews)
Great place to stay In Marathon. We have stayed here several times and always recommend it to friends and family visiting the area.

Reviewed on Apr 24, 2026

Coconut Cay Resort & Marina
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. ...
8.8/10 Excellent! (1,171 reviews)
Everything was great! The whole resort was very clean and well maintained. I would definitely come back. One downside is there are no rails or ropes by the water/lighthouse. It was definitely kind of stressful over there with our 2 year old.

Reviewed on Apr 25, 2026

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton
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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If you’re traveling during the week for business, Hotwire can score you a luxury hotel for as low as $168. In town for pleasure? Hotwire still has you covered. If you’re in the mood for a quick last-minute weekend getaway or spa retreat, you can get great Grassy Key hotel deals at the last minute.

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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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