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Hotels in Grassy Key

Choose from 2305 Grassy Key Hotel Deals

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 ...
8/10 Very Good! (813 reviews)
I really enjoyed the food. Restaurant by day-breakfast by morning.

Reviewed on Jan 16, 2026

Rainbow Bend Resort
Grassy Flats Resort & Beach Club

Grassy Flats Resort & Beach Club

2.5 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! (376 reviews)
We did not have breakfast there.

Reviewed on Jan 18, 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! (539 reviews)
I stayed here for one week by myself with my dog. We had a lovely time and thoroughly enjoyed the king suite Sea view room. The room had been recently updated and felt like a small apartment. This area was very safe and extremely dog friendly, the pool was very inviting and the property sits right ...

Reviewed on Jan 13, 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, 5 outdoor pools, and a full-service spa. Our guests praise the pool and the helpful staff in our ...
8/10 Very Good! (1,002 reviews)
Beautiful place

Reviewed on Jan 14, 2026

Hawks Cay Resort
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! (1,133 reviews)
Check-in was a little weird. They checked me into an occupied room. That was sorted out. Everything was perfect rooms were clean, spacious and well maintained.

Reviewed on Jan 18, 2026

Lime Tree Bay 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 ...
9/10 Wonderful! (1,074 reviews)
The room was amazing.... Mahina was 5* dining The beach unfortunately do not plan to swim there or snorkel which is #1 for me personally to free swim and snorkel... The pools amazing.. Thr attention to detail and placment of amenities excellent except if you are in last building where volleyball ...

Reviewed on Jan 12, 2026

Isla Bella Beach Resort & Spa
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! (1,001 reviews)
Yes, the room was very clean. We especially enjoyed the heated small pool close to our room. The grounds were beautiful and very well maintained. We enjoyed the chairs by the water.

Reviewed on Jan 12, 2026

Tranquility Bay Beachfront Hotel and Resort
Coconut Cay Resort & Marina

Coconut Cay Resort & Marina

2 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! (1,001 reviews)
A little mix up checking in, once in everything was great.

Reviewed on Jan 13, 2026

Coconut Cay Resort & Marina
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! (1,023 reviews)
the room was clean and modern, the hotel fee for a beach cooler and a beach umbrella was a waste as they have no beach and no one was there to give it to us anyway, for the price ok

Reviewed on Jan 13, 2026

Banana Bay Resort & Marina
Fairfield Inn & Suites by Marriott Marathon Florida Keys

Fairfield Inn & Suites by Marriott Marathon Florida Keys

2.5 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 ...
9/10 Wonderful! (1,070 reviews)
Clean room, friendly staff, hotel had pool with hammocks which was relaxing. They also had free breakfast. The gym was also very nice. Marathon was a nice city to visit. I would stay here again in the future.

Reviewed on Jan 13, 2026

Fairfield Inn & Suites by Marriott Marathon Florida Keys
Courtyard by Marriott Faro Blanco Resort

Courtyard by Marriott Faro Blanco Resort

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 full-service spa. Our guests praise the pool and the helpful staff in our ...
9/10 Wonderful! (1,000 reviews)
Breakfast was great!

Reviewed on Dec 31, 2025

Courtyard by Marriott Faro Blanco 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 ...
8.4/10 Very Good! (1,031 reviews)
The room was comfortable and clean. The laundry room was easily accessible. Staff was very helpful with directions and recommendations for local restaurants. The location had very easy access from Hwy 1. All on all it was very enjoyable. 😃

Reviewed on Jan 12, 2026

Kingsail Resort
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.

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How many hotels are there in Grassy Key?

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