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Grassy Flats Resort & Beach Club

Marathon · us

Grassy Flats Resort & Beach Club

9.1
Exceptional736 reviews
  1. Hotel Collection
  2. /Hotels in Marathon
  3. /Grassy Flats Resort & Beach Club
Offsite parking discounted rates availableParkingSelf parking (surcharge)Offsite parking discounted rates availableSecured parkingRestaurant

Check-in / Check-out

From 03:00 PM · Until 11:00 AM

Classification

3-Star Hotel

Amenities

Offsite parking discounted rates available, Parking, Non-smoking rooms, Air conditioning, Swimming pool, Restaurant

Location

Marathon, us

Luxurious Accommodation with Spectacular Views

Experience a slice of paradise at Grassy Flats Resort & Beach Club in Marathon. Indulge in pool views from every room, relax on the sun terrace, and unwind in the hot tub. Top-Notch Amenities for Ultimate Comfort Enjoy air-conditioned rooms with sea view balconies, flat-screen TVs, and fully equipped kitchens in selected units. The hotel also offers an outdoor pool, free parking, a garden, and a restaurant for your convenience. Unwind and Explore Take advantage of the barbecue facilities, concierge service, and ATM on-site. With easy access to nearby attractions like Florida Keys Aquarium Encounters, your stay at Grassy Flats Resort & Beach Club will be unforgettable. Book now for a dreamy getaway!

Loading rooms and rates...

Location

How to Find Us

58182 Overseas Hwy,Marathon FL 3305

Marathon · us

Policies

Good to Know

Check-in & Check-out

Check-in from 03:00 PM. Check-out by 11:00 AM. Early check-in and late checkout may be available upon request.

Cancellation

Cancellation terms vary by rate. Flexible rates allow free cancellation up to 24–48 hours before arrival. Non-refundable rates cannot be canceled or modified.

Payment

All prices are all-inclusive with taxes and fees. A valid credit card is required at check-in. No additional resort or service fees will apply.

Important Information

Guests are required to show a photo ID and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply. Please inform of your expected arrival time in advance. You can use the Special Requests box when booking, or contact the property directly using the contact details in your confirmation. Guests under the age of 18 can only check in with a parent or official guardian.

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GRASSY FLATS RESORT & BEACH CLUB

Guest Reviews

What Guests Say

9.1

Exceptional

736 reviews

Highlights

  • +Clean and well-maintained
  • +Friendly and helpful staff
  • +Great location with beautiful views
  • +Excellent amenities including pools and beach access

Could Improve

  • –No microwave in room
  • –Mattress quality could be improved
  • –Fire alarm disturbance early morning on two occasions
Cleanliness9.0

General sentiment noted that rooms were very clean, though there were mentions of a need for updated mattresses.

Service9.4

Multiple reviews praised the staff for being friendly and helpful, enhancing overall guest satisfaction.

Location9.4

Guests highlighted the location's beautiful views and proximity to amenities.

Room Quality8.5

While the rooms were clean, the lack of a microwave and mattress quality were points of concern.

Amenities9.3

The presence of two pools, a private beach, and various water activities received positive comments.

Value for Money8.7

Guests felt that amenities and overall experience justified the price.

Food and Beverage9.1

Food quality mentioned positively, with a rooftop bar highlighted for its offerings.

Overall Experience9.3

General sentiment conveyed that guests had a fantastic stay and would return.

Michael

Extended Group · Feb 2026

8

Great private location scenic views overall I would go back again but probably stay in the newer section

Liked:The property grounds were real nice good beach location very private two swimming pools a great tiki bar by one of them nice hot tub great views also a nice rooftop bar and restaurant
Disliked:We stayed in the older part of the resort which was a little dated but it was fine could use a little maintenance stupid things like paint and lightbulbs but overall it was fine if all you were looking for was a place to sleep but again that was the old section I think the newer section and the rooms that were right on the ocean looked a lot nicer

via Nuitee

Rene

Couple · Jan 2026

9

What a beautiful resort. The view from our balcony was amazing. Beach area and pool were beautiful. We willl definitely

Liked:Beautiful property. Great location. Great amenities
Disliked:No microwave in room

via Nuitee

Cheryl

Couple · Jan 2026

10

Fabulous

Liked:Everything
Disliked:Nothing

via Nuitee

JADINL3

Family · Jan 2026

6

Beach restoration ruined the experience

Liked:We were so excited about staying at this property based on the outstanding reviews. The experience was ruined by the beach restoration. The smell and noise made it impossible to enjoy our balcony, beach or pool area during our entire stay. I understand that improvements need to be made, but am disappointed that I wasn’t notified this would be going on during our stay. (I made the reservation over the phone) If we would have been informed, we might have made a different lodging decision.

via tripadvisor