Grassy Key Pet-friendly Vacations 2026

Photo by Monica Ferro

Plan, book, travel with confidence
Better together
Save up to $2,000 when you book a flight and hotel together*
Find the right fit
With over 300,000 hotels worldwide, it's easy to create a perfect package
Rest easy
Plan, book, and manage your trip all in one place

Top Pet-friendly Grassy Key Hotels

Rainbow Bend Resort

57784 Overseas Hwy Marathon FL

22 min walk from Dolphin Research Center

Make it a pet-friendly trip and bring along your four-legged friend. Dogs are welcome (fees apply) at this oceanfront hotel.

Grassy Flats Resort & Beach Club

58182 Overseas Hwy Marathon FL

14 min walk from Dolphin Research Center

This pet-friendly, oceanfront hotel welcomes dogs for an additional fee. Nearby Sunset Park Beach is a good place to stretch your legs if you need a walk.

9.4/10 Exceptional! (495 reviews)

"The beach isn't great, and there was a bad odor due to the sargassum. Otherwise, everything was fine. The hotel staff provides good service overall, and the cleanliness of the rooms and common areas is also good. I recommend the place; it is very welcoming, and the adults-only area is incredibly ..."

Reviewed on Sep 7, 2026

Gulf View Waterfront Resort

58743 OVERSEAS HWY Marathon FL

4 min walk from Dolphin Research Center

Dogs and cats will approve of the pet-friendly amenities, such as a dog park, during their stay at this hotel (fees apply for pets).

8.4/10 Very Good! (613 reviews)

"Very clean,comfortable and peaceful stay. Can't recommend enough for families. Thank you so much 💓"

Reviewed on Sep 3, 2026

See all 2,332 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.