The Best Family Hotels in Grassy Key, FL from NT$2,189 in 2026 | Expedia

A dolphin swimming near a wooden dock and a tree branch in the water.

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Check availability on Grassy Key Family Hotels

Tonight

Oct 12 - Oct 13

Tomorrow

Oct 13 - Oct 14

This weekend

Oct 16 - Oct 18

Next weekend

Oct 23 - Oct 25

Our top choices for Grassy Key family-friendly hotels

A wooden deck with a pool and chairs overlooking a beach with palm trees.

A beach with a wooden walkway leading to the water, palm trees, and a clear sky.

An outdoor dining area with thatched roof, wooden tables, and bar stools, overlooking the ocean.

A pool area with palm trees and a view of the ocean.

1. Grassy Flats Resort & Beach Club

Marathon

NT$5,870

NT$8,136 total

includes taxes & fees

Nov 10 - Nov 11

A table with breakfast items and a view of the beach.

A wooden deck with two chairs and a table, overlooking a beach with palm trees and the ocean.

A beach with lounge chairs and umbrellas, palm trees, and a building with balconies.

A hotel corridor with a view of the beach, palm trees, and outdoor seating.

2. Rainbow Bend Resort

Marathon

NT$3,306

NT$5,156 total

includes taxes & fees

Oct 15 - Oct 16

A tropical resort with a swimming pool, palm trees, and a view of the ocean.

A kitchen with white cabinets, a microwave, and a dining area with a glass table and white chairs.

A bedroom with a bed, nightstands, a TV, a ceiling fan, and a view of the ocean.

An aerial view of a resort with a swimming pool, palm trees, and a beach area.

3. Gulf View Waterfront Resort

Marathon

NT$3,595

NT$4,044 total

includes taxes & fees

Oct 13 - Oct 14

A bar area with a long counter, bar stools, and a view of the water.

A balcony with a view of a body of water, a pool, and outdoor seating.

A waterfront property with a large building, a smaller structure with a thatched roof, and several boats docked.

An outdoor dining area with tables and chairs, overlooking a body of water.

4. Fairfield Inn & Suites by Marriott Marathon Florida Keys

Marathon

NT$4,281

NT$4,816 total

includes taxes & fees

Oct 25 - Oct 26

A swimming pool with lounge chairs and umbrellas, surrounded by palm trees and a thatched-roof structure.

A bar area with wicker chairs and a thatched roof, overlooking a body of water with boats.

A modern living room with a large sectional sofa, a flat-screen TV, and a view of the sea through large windows.

Three colorful drinks on a table with a thatched roof and outdoor seating.

5. Hampton Inn Marathon - Florida Keys

Marathon

NT$4,163

NT$4,683 total

includes taxes & fees

Oct 18 - Oct 19

A water fountain with a pirate ship design, surrounded by a pool and lounge chairs.

An aerial view of a coastal resort with multiple white buildings, a clear turquoise sea, and lush greenery.

A modern living room with a balcony overlooking the sea, furnished with a sofa, chairs, and a dining table.

A pathway leading to a pool area with palm trees and a sunset view.

6. Hawks Cay Resort

Marathon

Families splash into island fun at this beachside resort with five outdoor pools and a children's club.

NT$6,439

NT$9,699 total

includes taxes & fees

Oct 19 - Oct 20

A wooden dock leading to a row of boats, with a thatched-roof building and palm trees in the background.

A bedroom with a bed, two bedside lamps, a glass table, and a view of a balcony with palm trees.

Two bicycles parked on a sandy beach with the ocean in the background.

A covered outdoor seating area with tables and chairs, overlooking a body of water and a distant shoreline.

7. Bonefish Bay Motel

Marathon

NT$3,002

NT$3,378 total

includes taxes & fees

Oct 18 - Oct 19

An aerial view of a resort with a central pool, multiple buildings, and a beach area with sun loungers.

A beach scene with two white chairs, a hammock, and palm trees.

A beach with white chairs and kayaks, palm trees, and a clear view of the ocean.

Room

8. Isla Bella Beach Resort & Spa

Marathon

Discover a family beach paradise with five pools, water sports, and complimentary games for kids of all ages at this resort oasis.

NT$7,442

NT$10,311 total

includes taxes & fees

Oct 18 - Oct 19

View all properties

Choose what matters most at family-friendly hotels in Grassy Key

Breakfast included

Pool

All-inclusive

4 stars

5 stars

Top Grassy Key Hotel Reviews

Kingsail Resort

Kingsail Resort

10/10 Excellent

"Friendly staff, clean room, great experience"

Fairfield Inn & Suites by Marriott Marathon Florida Keys

Fairfield Inn & Suites by Marriott Marathon Florida Keys

10/10 Excellent

"The property was fully renovated, very nice, clean . The pool area is nice, restaurants nearby and aquarium encounter close by."

Hawks Cay Resort

Hawks Cay Resort

10/10 Excellent

"Great stay! Property is well kept with many options for dining. Will definitely stay again"

Coconut Cay Resort & Marina

Coconut Cay Resort & Marina

10/10 Excellent

"Liked everything.. would like for check out to be a little later like 11."

Floating Sea Cove Resort & Marina

Floating Sea Cove Resort & Marina

10/10 Excellent

"Everything was good and the person rented the place was very nice and fast attention."

Lime Tree Bay Resort

Lime Tree Bay Resort

10/10 Excellent

"Excellent"

Tranquility Bay Beachfront Hotel and Resort

Tranquility Bay Beachfront Hotel and Resort

10/10 Excellent

"Access to the beach for the kids"

Captain Pips Marina & Hideaway

Captain Pips Marina & Hideaway

10/10 Excellent

"Anna, Katelyn and Penny at the front desk are ALWAYS helpful! This keeps us coming back! Beautiful facility on the Bayside. Big rooms, Great fishing, Great Kayaks in Lagoon.Great location! They are great on the little things too that matter. Greatest and Cheapest boat rentals !"

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