Grassy Key Marina

$100 - $125

Not Offered

Day Trip
Not Offered
59073 Overseas Hwy
Marathon, FL 33050
Check-in after 01:00 PM
Check-out before 11:00 AM

Book faster with the free Dockwa app

40 Reviews

by Adrian R. - Verified user on May 23, 2024
Excellent service, very helpful crew!

by Jim S. - Verified user on Mar 15, 2024
Dan & his guys are a great crew…. Very helpful. Rented a boat slip. We will be back in May. Thanks. Jim Stewart
Marina Response:
Thank you Jim so much for the Kind review of the staff here at GKM. It's really Gregg. You have called me Dan from the start. See you in May. It's GKM Staffs pleasure to meet & exceed your expectations. I myself appreciate as Marina Manager the kind remarks. If you need anything just call. Thank You, Capt Gregg Marina Manager

by Christopher S. on Mar 09, 2024
I can’t say enough positive things about this Marina! Greg is a superstar and is super helpful with everyone that walks in the door. We had a trailer issue on the way down and Greg was quick to help us launch our boat and store the trailer for us while it gets repaired. I highly recommend the Marina for launch as well as bait and fishing equipment!
Marina Response:
Thank you Chris so much for the Kind review of the staff here at GKM. After losing the bolt studs & trailer wheel. I was glad we at GKM could help launch and store you vessel and trailer here. It's was not a great way to start a vacation. But I'm very happy we could quickly help and make the restart of your family vacation on a positive note. It's GKM Staffs pleasure to meet & exceed your expectations. I myself appreciate as Marina Manager the kind remarks. If you need anything just call. Thank You, Capt Gregg Marina Manager

by cliff c. on Mar 05, 2024
The staff at Grassy Key was professional and went out of their way to make sure everything went well with the Jupiter 31’ I brought for storage. Communication is quick and responsive. Gregg went out of his way to help get us set up.
Marina Response:
Thank you Cliff so much for the Kind review of the staff here at GKM. Enjoy the New Jupiter with that Tall Tower & making GKM your vessels new Homeport. It's GKM Staffs pleasure to meet & exceed your expectations. I myself appreciate as Marina Manager the kind remarks. If you need anything just call. Thank You, Capt Gregg Marina Manager

by Joesph S. on Mar 01, 2024
Wife and I are older boaters and keep our Worldcat at grassy key marina year round. Although we use the boat occasionally we’re very pleased with the exceptional service received. Marina staff assisted with launching and then washed down trailer even putting it back in its spot for us. THANKS AGAIN Capt. Greg and crew for making our day!
Marina Response:
Thank you Joe & your wife so much for the Kind review. It's GKM Staffs pleasure to meet your expectations. I myself appreciate as Marina Manager the kind remarks. Enjoy the World Cat at your house. Will see you back in a few months. If you need anything just call. Thank You, Capt Gregg Marina Manager

by Taylor S. - Verified user on Feb 29, 2024
Could not have been more impressed with the service I got from Gregg and the new management at Grassy Key Marina. Took great care of me and launched my boat for me with 24 hour notice. Will definitely be storing my boat there again soon.
Marina Response:
Thank you Taylor so much for the Kind review. It's GKM Staffs pleasure to meet your expectations. I myself appreciate as Marina Manager the kind remarks. It was a fun night on Christmas Eve receiving your vessel at last minute notice. Will see you again soon. Capt Gregg Marina Manager

by Tom M. on Feb 21, 2024
Nothing but good things to say about Captain Gregg. The service great. They are very accommodating to my many requests. I store my boat there inside on a rack. Could not be more pleased.
Marina Response:
Thank you Tom so much for the Kind review. It's GKM Staffs pleasure to meet your expectations. I myself appreciate as Marina Manager the kind remarks.

by greg d. on Feb 20, 2024
Gregg does a fantastic job. If I needed anything he took care of it. Would highly recommend.
Marina Response:
Thank you Greg so much for the Kind review. It's GKM Staffs pleasure to meet your expectations. I myself appreciate as Marina Manager the kind remarks. Your Pathfinder is safe with Grassy Key Marina.

by Ron s. on Feb 14, 2024
OMG!!!! Where do I begin? I made a reservation in August for a wet slip And trailer storage for 3 months. When I arrived I was was greeted if you can call it a greeting from the most annoying mgr. First I was told the rates went up but I said I had a contract from Dockwa and he said I guess I’ll honor it!! Wow! I traveled from Wisconsin with a new blackfin 302 so I asked where I could give it a quick wash before launching the next day……. His response was I’m not allowed to wash it on the property!!!! It’s a no work yard but I can have his staff wash it but could not give me a price yet, he has not worked out pricing for any services . I decided to bring it over to my rv park and give it a quick wash down. I paid my bill of over 1700$ for my stay. After washing my boat I went back to store the boat and had a conversation with the annoying mgr about where I should store my trailer after launching my boat and was told my trailer storage would be extra . I showed him my contract included trailer storage and he said that I could store it unsecured outside by the road but to be in a secure location it would be extra….. let me say that there were a few broken old trailers store outside the security fences but all trailers were stored inside their fencing. I have a 15000$ trailer that I was not going to store in an unsecured area…… at this point I was demanding that he needs to honor my contract….. at this point he added a few more rules that put me over the edge! In addition to the fee for secure trailer storage I had to vacate the property by 5:30 or I was locked in and had no access to my boat before 7:00 am and the big doozy…… water was going to be charged upon consumption but the meters have not been installed so he was going to watch me and estimate my usage and charge me accordingly!!!!!! Well needless to say I was floored! I did not argue I just informed him that I was going to go take my boat and find another marina and asked him to credit me for my stay……. Of no surprise he informed me that they do not give credit!!! Thank god I paid with my American Express …a quick call to them and I got my credit! I am a hospitality professional and have been an owner and consultant for over 30 years in hospitality and can honestly say that this place needs help and direction more than any business I have worked with. The location and potential of this facility is amazing but the path they are on now and the facilities and services they offer are so below par that they don’t deserve one star!!! If the owners want help call me 920-562-6512 Jr
Marina Response:
As the Management & Staff strives for excellence at Grassy Key Marina. Reviews are taken very seriously. We have taken the time to read your posted review thoroughly. Keeping GKM response very simple. Above comments are very inaccurate to our findings. GKM prides itself on growing and learning for our guest experiences. Your Vessel & Trailer is always welcome back at Grassy Key Marina anytime. Thank You Captain Gregg Marina Manager.

by David S. - Verified user on Jan 31, 2024
I stored my boat here for 1 year without any issues and had a good experience for the most part. The staff was friendly and helpful. The boat ramp has seen better days and is in need of pavement repairs and the approach is cockeyed with the driveway making it sometimes difficult get lined up correctly. My review for that period would be 4 or 5 stars. 9 days before the end of the month I received a notice my current contract was canceled and a new contract for storage from the new manager with a 33% rate increase stating my contract had expired in the previous year which was incorrect. I had extended my agreement with previous managers and was reflected properly in the DockWa system. After going round and round with the new manager he agreed to keeping me at the same rate for 3 more months when my original agreement had 5 months left on it. With the bad taste in my mouth from this experience I decided to go ahead and move now rather then waiting the 3 months as I found another suitable marina that was the same rate as my original rate. Leaving 2 stars due to the handling of my previous contract, the 33% rate increase from $300 to $400 per month and was only given 9 days notice on the new rate.
Marina Response:
David S. I am sorry that we were not able to accommodate your request to stay at our marina at less than competitive rates. Since purchasing the marina toward the end of 2022, we have tried very hard to make improvements to the property to benefit the customers and improve their overall experience. We have learned throughout this process that we simply cannot please everyone, although I am very proud to say that the overwhelming majority of our customers are very happy with the marina and our efforts. We increased our storage rates to stay competitive with the surrounding market and because we purchased a marine forklift that allows us to access the dry racks both inside and outside the barn. The old rates that we inherited from the prior owners were based on the fact that the prior owners did not have a working forklift and therefore could not access any of the rack spaces. Thus, they utilized the marina as a trailer storage facility that simply could not justify rates typical of a full-service marina. We genuinely wish you well at your new location David, but feel free to come back if you find that the grass is not greener over there. No hard feelings on our part, although I do take issue with your description of our boat ramp. There is nothing wrong with the pavement that affects boats going in or out of the water, and the approach to the ramp is straight as an arrow. (I suppose it could appear "cockeyed" in your rearview mirror if you are not skilled enough to back up your boat straight, but anyone that wants to be the judge of this can either visit us in person or log on to Google Earth.) Unfortunately, it seems to me that perhaps you were grasping for something to justify a two-star review when in your heart you knew we deserved better. And while you did give us a non-deserved review, I want to thank you for pointing out to those that may not know that we have a boat ramp on site for anyone to use, even if you are not a contracted customer of ours. For those that do not know, there are no longer any free public ramps in Marathon and the parking at the two public ramps in town can be a nightmare depending on the season. If you want to utilize our boat ramp, just stop into the marina office and you can even park on site, if necessary. We are at mile marker 59 on the bay side (still working on new signage). If anyone wants to speak to me directly, please call my cell phone anytime. (561) 827-5333. Thank you, and best of luck to you David S. Jeff Vastola Co-Owner of the Grassy Key Marina

by Howard M. - Verified user on Jan 04, 2024
The guys there are friendly and helpful. Some additional signage for Grassy would have been helpful upon arrival. The convenience store is under new management. Don't expect much help from them. Overall, the experience was very positive.

by Troy H. - Verified user on Nov 21, 2023
Great customer service from Jose. I'm coming back next.

by Christopher W. - Verified user on Oct 01, 2023
Super easy in and out to store the trailer for a few days. See ya next year

by Brian M. - Verified user on Sep 03, 2023
Very friendly and helpful staff. Thanks

by Jason C. - Verified user on Aug 31, 2023
friendly and helpful staff

by Patricia S. - Verified user on Aug 08, 2023
Great place to keep your boat! Friendly staff and a convenience store with food , drinks and ice.

by Matt J. - Verified user on Jul 17, 2023
Perfect .. Thank you!!!

by Kegan M. - Verified user on Jul 10, 2023
Great marina. Friendly people. You can see the dolphins at the dolphin research center next door also!

by Dach A. - Verified user on Jul 05, 2023
Great people and great service. They accommodated my 35’ Everglades and trailer to be stored when I had to pull the boat out of water propeller repairs. Thanks guys .

by Dustin W. - Verified user on Jul 03, 2023
Grassy Key Marina was great as usual!

by Teri S. - Verified user on Jun 25, 2023
Super friendly and helpful!
Marina Response:
Thanks Teri. We hope you had a great time while you were there!

by Henry H. - Verified user on Jun 11, 2023
Customer service was great! Everyone was very helpful..
Marina Response:
Very glad to hear it. Thank you for taking the time to post about your experience. We hope you had fun in paradise.

by yohan B. on May 20, 2023
I have had my Jetski in this Marina for more than 5 years with the old and new owners and Stacy always on top of things nothing, but good experience there. I recommend this place to everyone, very relaxing and good vibes site.
Marina Response:
Thank you for the review. We appreciate your business. :)

by Sue C. on May 19, 2023
Great improvements to the Marina with new owner…the recently remodeled store has great inventory…..a quick alternative if you don’t want to drive into Marathon….staff has always been professional and accommodating….. Stacey is a true gem and keeps things running smoothly!
Marina Response:
Sue, thank you for the kind words. We value your business and are lucky to have such amazing customers.

by Glenn B. on May 18, 2023
One-stop-shop for all things getting out on the water. Boat storage, groceries, beers, bait…….all much better priced than anywhere in Marathon or Duck Key. New ownership has brought on strong staff with a numerous enhancements to the marina and boatel storage. Access to the staff for scheduling is always 24/7 and operating hours of 7am- 7pm are super helpful coming & going to our house on Duck Key.
Marina Response:
Glenn, Thank you for taking the time to post a review. It is a pleasure having you as a loyal customer.
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About Grassy Key Marina

Centrally located on the Keys, Grassy Key Marina offers boaters multiple services to make their stay as enjoyable as possible. Indoor and outdoor storage options for either your vessel or trailer or both, fishing pole rentals, live bait, Paradise Boat & Jet Ski rental company on premise and a fully stocked mini market are just some of the amenities that we available to our boaters.

Please Note: You do not have a confirmed reservation until you receive a Confirmation email through Dockwa. You can also check in the "Trips" section of your Dockwa account to see the status of your request. A "Pending" request email or status is not a confirmation.

Booking Info

Max LOA: 36’

Max Beam: 25’

MAx Depth: 3'

Please note there is a $5 reservation fee that is automatically added to each reservation as a Marina Service Fee.

Please Note: We do not accept liveaboards at the marina


  • Water Hookup


    • Ship Store
    • Dry Stack
    • Launch Service
    • Wireless Internet
    • Restrooms
    • Showers
    • Ice
    • Launch Ramp
    • Security
    • Groceries
    • Hotel/Lodging
    • Restaurant
    • Bait & Tackle
    • Land Storage
    • ATM



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