Grassy Key Travel Guide

Tourist 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 NZ$289 per night from 9 Nov to 10 Nov
NZ$289
9 Nov - 10 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! (1,002 reviews)
"When was clean, Property was clean and organized, staff was really sweet and helpful. Best part was the lounge chairs on the beach watching the sunset. Close to a lot of state parks which we really enjoyed. Overall we’ll be back."

Reviewed on 7 Nov 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 NZ$243 per night from 1 Dec to 2 Dec
NZ$243
1 Dec - 2 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 NZ$456 per night from 6 Dec to 7 Dec
NZ$456
6 Dec - 7 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! (504 reviews)
"Loved everything about this place!"

Reviewed on 5 Nov 2026

Grassy Flats Resort & Beach Club
See all 2,341 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.
Wide Horizon oceanfront. 4 bedroom, 4 ½ bath, kayaks, pool + observation deck.

Wide Horizon oceanfront. 4 bedroom, 4 ½ bath, kayaks, pool + observation deck.

Marathon FL
Stay at this beach holiday home in Marathon. Enjoy free Wi-Fi, private pools and a beach locale. Popular attractions Crawl Key and Grassy Key Marina are located ...
10/10 Exceptional! (49 reviews)
"Awesome views. Clean house. Fun places within walking and biking distance. Had a great time with the family playing the provided games and hanging out by the pool."

Reviewed on 19 Oct 2026

Wide Horizon oceanfront. 4 bedroom, 4 ½ bath, kayaks, pool + observation deck.
Brand New Three-Story Home's in Gated Community with Beach & Pool

Brand New Three-Story Home's in Gated Community with Beach & Pool

Marathon FL
Stay at this beach holiday home in Marathon. Enjoy free Wi-Fi, a beach locale and a water park. Popular attractions Keys Cable Park and Grassy Key Marina are ...
10/10 Exceptional! (1 review)
"Beautiful property and very responsive host."

Reviewed on 5 July 2026

Brand New Three-Story Home's in Gated Community with Beach & Pool
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! (382 reviews)
"Overall the cleanliness was good however there some areas needed some attention of cleaning such as toilet, dusting trash can, table ceiling fan and couple other items. Staff were great. The water pressure was weak both in shower and sink."

Reviewed on 7 Nov 2026

Yacht Haven Marina
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.

Activities

Marathon: Rhum Runner Aqua Park Adventure

Marathon: Rhum Runner Aqua Park Adventure

NZ$66
per adult
Marathon: Rhum Runner Aqua Park Adventure
Day Sailing Adventure in the Florida Marine Sanctuary

Day Sailing Adventure in the Florida Marine Sanctuary

NZ$211
per adult
100% of travellers recommend
Day Sailing Adventure in the Florida Marine Sanctuary
Marathon: Cruisin' Tikis Marathon - Private Sunset Cruise

Marathon: Cruisin' Tikis Marathon - Sunset Cruise

NZ$194
per adult
Marathon: Cruisin' Tikis Marathon - Sunset Cruise
Private Customizable Charter in Marathon Florida

Private Customizable Charter in Marathon Florida

NZ$572
per traveller
100% of travellers recommend
Private Customizable Charter in Marathon Florida
Marathon Key FL: Snorkel Trips and Sunset Cruises

Marathon: Snorkeling and Sunset Cruises

NZ$123
per adult
Marathon: Snorkeling and Sunset Cruises
Marathon FL Sandbar Cruise & Sightseeing Adventure

Marathon FL Sandbar Cruise & Sightseeing Adventure

NZ$201
per adult
100% of travellers recommend
Marathon FL Sandbar Cruise & Sightseeing Adventure
See all activities in Grassy Key

Cities near Grassy Key

A beach with clear water, palm trees, and people relaxing on the sand.

Marathon

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