Imagine having your very own private island in the Florida Keys, surrounded by crystal-clear turquoise water and nothing but ocean breezes. East Sister Rock Island in Marathon, FL makes that dream a reality for just $223 per person.
This stunning off-grid retreat sits over a mile offshore and comes with a beautiful home, a pool, kayaks, and some of the most breathtaking sunrises and sunsets you will ever see. Whether you are planning a family vacation, a group getaway, or a romantic escape, this hidden gem is worth every penny.
What Exactly Is East Sister Rock Island?
Picture a tiny island sitting over a mile offshore in the Florida Keys, completely surrounded by glittering blue-green ocean water. That is East Sister Rock Island, located near Marathon, FL at 99 Ocean Dr E.
Rated an impressive 4.9 stars from 76 reviews, it is one of the most unique vacation rentals in the entire country.
Guests rent the whole island exclusively, meaning no strangers, no shared spaces, and zero interruptions. The property is family-owned and operated, giving it a warm, personal touch you rarely find at big resorts.
You reach the island by a quick three-minute boat ride from a secure, gated parking area near the mainland. Once you arrive, the outside world simply melts away.
Reviewers consistently call it a “trip of a lifetime” and many return year after year, which says everything about how special this place truly is.
The Price Breakdown: How $223 Per Person Actually Works
At first glance, renting an entire private island might sound like something only millionaires can afford. However, East Sister Rock Island cleverly splits the cost across your group, making it surprisingly budget-friendly for the experience you receive.
When a group of guests divides the nightly rate, the per-person cost can drop to around $223, depending on your group size and the time of year you visit. That price gets everyone exclusive access to the whole island, the house, the pool, kayaks, paddle boards, and a skiff for trips to shore.
Compare that to a standard Florida Keys hotel room that offers none of those perks, and the value becomes crystal clear. One reviewer noted that the island “will return to you many times over in experiences, comfort, and memories.” Booking early and traveling with a larger group helps maximize savings and fun simultaneously.
Getting There: The Three-Minute Boat Ride Adventure
Arriving at East Sister Rock Island is part of the magic. Guests park their cars in a secure, gated area near Marathon and then hop aboard a family skiff for a breezy three-minute boat ride across sparkling water.
It is short enough to feel easy but just long enough to feel like a real adventure.
Host Wes personally meets every group at the dock on arrival day, guides them to the island, and gives a thorough walkthrough of everything they need to know. He even helps point out deeper water channels for guests who bring their own boats, as one Tampa boater enthusiastically noted in their review.
The skiff stays available throughout your entire stay, so quick supply runs to nearby grocery stores and restaurants are never a hassle. Key West is also less than an hour away by boat, making day trips totally doable whenever the mood strikes.
Meet Your Host Wes: The Man Behind the Magic
Every great vacation destination has a great host behind it, and East Sister Rock Island is no exception. Wes, the owner and primary host, has earned glowing praise in nearly every single guest review posted online.
His responsiveness, warmth, and genuine care for his guests set a tone that makes the whole experience feel personal.
From the moment you arrive, Wes gives a guided tour, explains how the solar power system works, shows you where pool valves are located, and makes sure you feel completely comfortable. He also checks in by phone during your stay to make sure everything is going smoothly.
One reviewer said Wes “eased all concerns and made sure we were comfortable in the knowledge that we had everything we needed.” His wife Elena has also been praised for showing incredible compassion when guests needed to reschedule due to family emergencies. These are genuinely good people.
The House: Luxury Meets Off-Grid Living
Do not let the words “off-grid” fool you into thinking rustic or uncomfortable. The house on East Sister Rock Island is spacious, beautifully decorated, and stocked with every comfort you could possibly want during a week-long vacation.
The kitchen is fully equipped with luxury appliances, making it easy to cook fresh meals and host group dinners right on the island. Quality mattresses, soft sheets, cozy furniture, and high-speed internet mean you never feel like you are roughing it.
Split air conditioning units keep the bedrooms perfectly cool, while the many open sliding glass doors allow the constant ocean breeze to naturally cool the main living areas.
One reviewer described it as “living at home but over a mile offshore surrounded by water.” Another called it “high end with luxury appliances and furniture.” The house is cleaned meticulously before every arrival, and guests consistently mention how spotless everything is upon check-in.
The Wraparound Porch: Your New Favorite Hangout Spot
There is something about a wraparound porch that just makes life feel better. The one at East Sister Rock Island goes all the way around the house, giving guests a full 360-degree view of the ocean from every angle.
It is genuinely stunning at any hour of the day.
Mornings are best enjoyed with fresh coffee in one of the comfortable Adirondack chairs, watching the sky shift from deep purple to brilliant pink and gold as the sun rises over the water. Afternoons call for swinging lazily in one of the several hammocks strung along the porch, catching the steady sea breeze.
As evening arrives, the porch transforms into the ultimate sunset-watching deck. Guests have described the sunsets as “breathtaking” and “like a painting.” A pool table on the deck adds a fun activity for evenings when you want to mix relaxation with a little friendly competition among your group.
The Pool: Cool Off in Style
When the Florida sun is blazing overhead and the ocean breeze is not quite enough, the island’s gorgeous in-ground pool is ready to save the day. Ranging from waist-deep at one end to just over five feet at the other, it is perfectly sized for both relaxing floats and actual swimming laps.
Resort-style chaise lounge chairs surround the pool area, giving the whole space a high-end, vacation-resort feel without the crowds or the price tag. The pool overlooks the helipad and the open ocean, making it arguably one of the best pool views in all of Florida.
Guests rave about cooling off in the pool after long mornings of fishing, snorkeling, or simply soaking up the sun on the loungers. One reviewer summed it up perfectly by saying the pool setup created “a resort-like feel” that made every single afternoon feel like pure luxury without leaving the island.
The Moat: A Natural Aquarium Right Around the Island
One of the most jaw-dropping features of East Sister Rock Island is the natural moat that wraps completely around it. This shallow ring of water acts like a living, breathing aquarium filled with an astonishing variety of sea creatures that guests can observe up close every single day.
Reviewers have spotted barracuda, parrot fish, moray eels, angel fish, stingrays, starfish, puffer fish, nurse sharks, tarpon, grouper, snapper, lobster, conch, octopus, and even manatees swimming right there in the moat. One guest described swimming in it as “like swimming in a tropical fish tank.” Water shoes are recommended since sea urchins also call the moat home.
The moat doubles as a lazy-river-style swim area and is gentle enough for swimmers of all ages and comfort levels. At night, the underwater life transforms dramatically, making after-dark snorkeling a wildly memorable experience that guests talk about long after returning home.
Water Sports: Kayaking, Paddle Boarding, and More
If staying still is not really your style, East Sister Rock Island delivers plenty of action right at your doorstep. Kayaks and paddle boards are included with your stay, giving guests an easy and fun way to explore the water surrounding the island at their own pace.
Paddling around the island at sunrise or sunset is a particularly magical experience, with the water glowing in shades of pink, orange, and gold. Some adventurous guests have even brought underwater scooters to zip around the moat and explore the reef life below the surface in a whole new way.
The waters around the island are ideal for snorkeling as well, with colorful reef fish, sharks, rays, and flounder visible in the crystal-clear shallows just steps from the house. Nearby Sombrero Reef is a short boat ride away and is widely considered one of the most spectacular snorkeling spots in the entire Florida Keys region.
Fishing: A True Angler’s Paradise
Serious anglers, take note: East Sister Rock Island might just be the best fishing location you have ever set foot on. Guests have pulled in pompano, tarpon, mahi-mahi, barracuda, grouper, snapper, red drum, needlefish, grunts, and more, sometimes without even leaving the dock.
One family returned to the island two years in a row specifically because of the fishing. Their sons reportedly caught fish that people travel hundreds of miles to the Keys just to find, all from the rocks and dock right on the property.
That kind of fishing access is genuinely rare and incredibly exciting for anyone who loves casting a line.
Early mornings before the heat sets in are the prime time for fishing around the moat and dock. The surrounding reef ecosystem keeps the fish population thriving year-round, so no matter what season you visit, there is almost always something biting close to shore and ready to make your trip unforgettable.
Sunrises and Sunsets: Nature’s Daily Show
Waking up before 6 a.m. might sound painful at home, but at East Sister Rock Island, guests practically race out of bed to catch the sunrise. With no city lights, no tall buildings, and nothing blocking the horizon in any direction, the sky puts on a full, unobstructed show twice a day, every single day.
One guest wrote that they woke up before dawn every morning just to watch the sky transition from darkness to a brilliant explosion of color. Sunsets are equally dramatic, with the horizon turning into what reviewers have called “a painting” as the sun dips below the water each evening.
Having the wraparound porch, multiple hammocks, and waterfront platforms positioned all around the island means there is always a perfect front-row seat available no matter which direction the best light is coming from. Sunrises and sunsets here are not just pretty, they are genuinely life-changing moments worth planning your day around.
Sustainability: Completely Off the Grid
Here is a fun fact that surprises most first-time guests: East Sister Rock Island runs almost entirely on solar power. The property is completely off the grid, with a backup generator that kicks in only on rare occasions when solar energy falls short.
It is an impressive setup that makes the island feel even more special and self-contained.
The home is designed to work with the natural environment rather than against it. Open sliding glass doors throughout the main living areas allow the constant ocean breeze to naturally cool the space, reducing the need for heavy air conditioning during most hours of the day.
The bedrooms use efficient split AC units for comfortable nighttime sleeping.
This commitment to sustainability does not come at the expense of comfort. Guests enjoy high-speed internet, fully functioning kitchen appliances, and all modern conveniences while still living lightly on the land.
It is proof that luxury and environmental responsibility can absolutely coexist in one beautiful package.
Wildlife Encounters: Dolphins, Sharks, and Stingrays
Some vacation spots promise wildlife encounters but rarely deliver. East Sister Rock Island is the real deal, where incredible animal sightings happen so regularly that guests begin to expect them as part of the daily routine.
Dolphins have been known to greet guests almost every single morning near the dock.
Stingrays glide gracefully through the moat shallows, nurse sharks cruise the surrounding reef, and colorful reef fish dart in and out of the coral just beneath the surface. One reviewer spotted a manatee swimming peacefully around the island, a sighting that left the whole group speechless and reaching for their cameras.
Even from the porch or the poolside loungers, wildlife moments happen constantly. Sea birds, pelicans, and other coastal species are regular visitors to the island throughout the day.
For nature lovers, families with curious kids, or anyone who finds joy in the natural world, East Sister Rock Island delivers unforgettable close-up encounters that no aquarium or zoo could ever replicate.