Grassy Key Pet-friendly Vacations 2026

Photo by Monica Ferro

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.

8.2/10 Very Good! (1,007 reviews)

"Very bad service. Beds on the bug. No soap, no conditioner. No TV working."

Reviewed on Aug 19, 2026

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! (488 reviews)

"Beautiful scenery and great memories"

Reviewed on Aug 21, 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! (604 reviews)

"Nice place"

Reviewed on Aug 17, 2026

See all 2,346 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.