Pet-friendly Vacations in Grassy Key 2026

Photo by Monica Ferro

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Pet-friendly Hotels in Grassy Key

Rainbow Bend Resort

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! (1,009 reviews)

"The property and the room smell really bad. The bathroom door does not working right."

Reviewed on Aug 5, 2026

Grassy Flats Resort & Beach Club

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! (481 reviews)

"Wish the AC was better. Amazing staff all around. Comfortable. A true beauty"

Reviewed on Aug 3, 2026

Gulf View Waterfront Resort

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! (598 reviews)

"Many of the guests that were staying considered the resort to belong to themselves only,leaving trash their kids stuff toys etc.all over common areas as well as occupying the community spaces as if no one else existed"

Reviewed on Aug 3, 2026

See all 2,367 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.