The Best Family Hotels in Grassy Key, FL from ₩184,359 in 2026

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Our top choices for Grassy Key family-friendly hotels

Rainbow Bend Resort

Marathon

₩242,978 total

includes taxes & fees

Jul 13 - Jul 14

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton

Marathon

Create a fun-filled retreat where kids and adults thrive with oceanfront pools and bicycle adventures through tropical gardens.

₩325,995 total

includes taxes & fees

Jul 27 - Jul 28

Conch Key Fishing Lodge and Marina

Marathon

Family-friendly fishing lodge with a private beach and outdoor pool provides a perfect coastal escape for all ages.

₩215,308 total

includes taxes & fees

Jul 14 - Jul 15

Grassy Flats Resort & Beach Club

Marathon

₩411,619 total

includes taxes & fees

Jul 16 - Jul 17

Fairfield Inn & Suites by Marriott Marathon Florida Keys

Marathon

₩269,142 total

includes taxes & fees

Jul 13 - Jul 14

Captain Pips Marina & Hideaway

Marathon

Family paradise offers outdoor pool, marina access, free bikes, and endless water activities at coastal haven.

₩208,368 total

includes taxes & fees

Jul 16 - Jul 17

On the beach, sun loungers, beach umbrellas, beach towels

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.

₩522,653 total

includes taxes & fees

Jul 19 - Jul 20

Premium bedding, soundproofing, iron/ironing board, free WiFi

Knight's Key Suites

Marathon

₩184,359 total

includes taxes & fees

Aug 9 - Aug 10

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

Breakfast included

Pool

Top Grassy Key Hotel Reviews

Coconut Cay Resort & Marina

10/10 Excellent

"Great little place to stay, very clean with amazingly comfy beds. Saff was very friendly and attentive. Highly recommend staying here if your in the keys. Would definitely stay here again."

Captain Pips Marina & Hideaway

8/10 Good

"We stayed in the Great White room for 8 nights. Husband, Wife and teen. We did make the most of and enjoyed our stay. The staff was wonderful, the restaurant next door was fantastic. We rented a boat on two separate days, had an amazing time. The room and property were not great. There are holes in the walls and lizards came in one night. The bathroom sink which is outside in the bedroom, was not secure to the wall and the grout was peeling. There was 1 small mirror on the vanity so we couldn't see what we looked like after getting dressed. There's a connecting door to the room next door, it is one door that is very thin and you could hear EVERYTHING going on in the other room. There is no one around after 5pm at the front office, you are on your own. The Murphy bed support is broken. I was down by the water admiring what I thought was coral only to realize it was two white paint rollers dried and stuck to the rocks. The back patio is NOT private and the door is fully glass so everyone can see in. The dining room portion looked out to the water but eating dinner with strangers sitting at the patio table was awkward. There were staff members walking around earlier in the mornings, but no one ever picked up trash that was scattered around from guests before us and other guests during our stay. At one point my husband and I were picking up trash so we can enjoy being outside."

Fairfield Inn & Suites by Marriott Marathon Florida Keys

10/10 Excellent

"Great hotel!! Very confortable!!the rooms are very clean and the hotel facilites too. The breakfast is great, many things to eat fresh fruits, yougurt and milk, is the best part for childrens!! A Great breakfast buffett!! The personal in the check in area is very friendly and give you feel great vacaciones. The ocean views was amazing, I recommend this hotel a 100% Thank you , !!!!"

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton

10/10 Excellent

"We recently stayed here and had a wonderful experience. The staff was incredibly friendly, welcoming, and always willing to help. The breakfast was delicious, and the scenery was absolutely beautiful. A couple of things to keep in mind: this hotel does not have its own beach, but guests can enjoy the beach at the neighboring hotel at no additional cost. Also, be aware that this resort charges separate parking and resort fees. Overall, the location was perfect and made for a great base to explore the Florida Keys. We had a great stay and would definitely return!"

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Our top choices for Grassy Key family-friendly hotels

Rainbow Bend Resort

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton

Conch Key Fishing Lodge and Marina

Grassy Flats Resort & Beach Club

Fairfield Inn & Suites by Marriott Marathon Florida Keys

Captain Pips Marina & Hideaway

Isla Bella Beach Resort & Spa

Knight's Key Suites

Glunz Ocean Beach Hotel & Resort

Hawks Cay Resort

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

Top Grassy Key Hotel Reviews

Coconut Cay Resort & Marina

Lime Tree Bay Resort

Courtyard by Marriott Faro Blanco Resort, Marathon Florida Keys

Hawks Cay Resort

Captain Pips Marina & Hideaway

Fairfield Inn & Suites by Marriott Marathon Florida Keys

Floating Sea Cove Resort & Marina

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton

Kingsail Resort

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Find Family Hotels in Grassy Key, FL

Change your mind

Treat yourself

Be picky

Check availability on Grassy Key Family Hotels

Our top choices for Grassy Key family-friendly hotels

Rainbow Bend Resort

Faro Blanco Resort Marathon Florida Keys, Curio by Hilton

Conch Key Fishing Lodge and Marina

Grassy Flats Resort & Beach Club

Fairfield Inn & Suites by Marriott Marathon Florida Keys

Captain Pips Marina & Hideaway

Isla Bella Beach Resort & Spa

Knight's Key Suites

Glunz Ocean Beach Hotel & Resort

Hawks Cay Resort

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

Top Grassy Key Hotel Reviews

Coconut Cay Resort & Marina

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