Review · GREECE
From Ag Anna: Rina’s Cave and Ano and Kato Koufonisi Cruise
Catch two islands in one long day. This 8.5-hour cruise from Agia Anna combines a swim at hard-to-reach Rina’s Cave with free time on Ano Koufonisi, using the 25-meter sailing boat Mikros Kosmos II. I like the generous local lunch and the relaxed pace at sea. The main tradeoff is simple: you spend many hours on the boat, and the crew provides little historical commentary.
The strongest appeal is the mix of clear-water swimming and independent island time. You can jump from the boat near Rina’s Cave, eat souvlaki and home-cooked Naxian dishes, then wander Ano Koufonisi for about three hours. But this is not a guided sightseeing trip, and strong winds can change the planned stops.
Key points to know before booking

- Rina’s Cave is reached only by sea, with about 1.5 hours for swimming, snorkeling, a nearby pebble beach, and the cave’s freshwater spring.
- The onboard lunch is a major part of the value, with souvlaki, salads, pasta, potatoes, rice, spetzofai, fruit, bread, and vegetarian choices.
- Ano Koufonisi gives you three hours on your own, enough for the village, nearby beaches, shopping, or a low-cost sea taxi.
- Mikros Kosmos II has sunbeds, loungers, shade, snorkels, life jackets, and floating noodles, but the best front sunbeds are limited.
- The cruise costs $94 per person, including water, lunch drinks, and food, which makes it a strong value for a full day on the water.
- Sea travel takes time, and this trip is not a good match for non-swimmers, people prone to seasickness, or anyone needing wheelchair access.
A full day begins at Agia Anna

The meeting point is the taxi piazza at Agia Anna, where a dock leads to Mikros Kosmos II. Departure is scheduled for 9:45 in the morning, with a return around 7:00 in the evening. Free transfers are available from certain meeting points, but you need to ask in advance rather than assume your hotel is covered.
Arrive early if you want a prime sunbed. The front loungers are limited, and once some passengers claim them, they may keep those places for the entire day. The boat also has upper seating and some shaded areas, but shade is not extensive. A hat is not optional on this kind of Greek sailing day.
The boat is large enough to feel comfortable when it is not filled to capacity. Still, reports from busy departures suggest that seating can become tighter, especially when bad weather has affected an earlier sailing. I would arrive with enough time to find your place, settle your belongings, and ask the crew where the safest swimming access is.
The early sailing along Naxos’ west coast is scenic, but it is also a long ride. The boat takes roughly 1.5 hours to reach Rina’s Cave, and the return can feel even longer if the wind rises. Bring a book, quiet game, or downloaded entertainment. This is a cruise for people who enjoy being at sea, not just for people who want to get quickly from one beach to another.
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Rina’s Cave is the day’s best swim

After about 90 minutes, Mikros Kosmos II reaches Rina’s Cave on the southern coast of Naxos. This is one of the most appealing parts of the trip because the cave is accessible only from the water. You get around 1.5 hours here, including time to swim, snorkel, and enjoy the surrounding rocks.
Confident swimmers can jump from the boat into the clear water. If that sounds too bold, you can enter more gently and use the floating noodles or a life jacket. Snorkeling equipment is available, though you may prefer to bring your own mask if you want a better fit.
The cave itself is the centerpiece, but do not ignore the nearby pebble beach. A short swim takes you toward a freshwater spring, an unusual touch in such a dry coastal setting. The beach is small and natural, with none of the services you would find at a developed resort. That is exactly why the stop feels special, but it also means you should take your towel, sunscreen, and anything else you need from the boat.
Swimming time is precious here. Some people wish the stop lasted longer, while others find 90 minutes enough once lunch preparation begins. Keep an eye on the crew’s signals, especially if you swim away from the boat. This is not a supervised swimming lesson.
One practical point deserves attention: the supplied information says life jackets and safety equipment are available, but some passengers felt the safety briefing was not as clear as it should have been. I would ask directly about the boarding ladder, swimming boundaries, and emergency procedure before entering the water. That small conversation can make the stop more comfortable.
Lunch brings the boat to life

While you swim, the crew prepares lunch aboard the boat. This is not a small snack spread. The meal includes Greek salad, oven potatoes, pasta, spetzofai, rice with vegetables, fresh bread, fruit, and pork or chicken souvlaki. Vegetarian diners have salad, potatoes, rice, and other vegetable dishes available.
The food is home-style rather than polished restaurant fare. That is part of its charm. After a morning in the sun and water, generous portions of warm food taste far better than a fancy but tiny plate. Several meals include multiple hot dishes, so I suggest eating a light breakfast.
Water is provided, and lunch includes Coca-Cola, Sprite, orange juice, and wine. Beer, cocktails, extra soft drinks, and snacks cost more and can be purchased onboard. The wine may not satisfy anyone searching for a serious tasting experience, but it fits the easygoing character of the day.
The family-run feel is one of the cruise’s most praised features. The cooking and serving team is warm and attentive, and the crew works quickly when everyone returns from the swim. On the journey back, fresh watermelon and a homemade sweet may be served, adding a pleasant finish to the long ride.
If you have food allergies, tell the company before departure. You should also provide the full names and birth dates requested at booking. Vegetarian meals are available, but the crew needs advance notice about allergies and special requirements.
Kato Koufonisi depends on the wind

The next possible stop is Kato Koufonisi, an uninhabited island. It is a quiet place with beautiful water and very little to do on land. When sea conditions allow the visit, the stop offers another chance to swim and enjoy a more natural setting.
This part of the schedule is weather-dependent. Strong wind can prevent the boat from reaching one or more planned stops. In that case, the crew may spend longer at another location, including Kato Koufonisi. You should treat the route as a plan rather than a promise.
That flexibility is sensible in the Aegean, but communication matters. Some passengers felt disappointed when a planned stop changed without a clear explanation. If the weather shifts, ask the crew what is changing and how much time you will have at the next stop.
Kato Koufonisi is best for swimming, quiet views, and a break from organized sightseeing. If you need cafés, shops, and streets to explore, save your energy for Ano Koufonisi.
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Three hours on Ano Koufonisi

Ano Koufonisi is the main island visit and usually receives about three hours. This is independent time, not a guided walk. You can stroll the cobbled streets, browse shops, eat or drink at your own expense, or head toward a nearby beach.
The island’s turquoise water is the great attraction. Ammos Beach is especially convenient for a swim, and you can use the free time simply to settle on the sand and cool off. If you prefer to see more coastline, a low-cost sea taxi may take you to other beaches for a brief visit.
Three hours gives you a useful choice. You can walk through the village and swim, or skip the village and spend most of the stop by the sea. You probably cannot do every beach and explore every lane at a leisurely pace, so decide early what matters most.
Some passengers find three hours just right. Others feel it is too long, especially if they are not interested in swimming or sitting at a beach bar. I see this as a good fit for independent people. You are not being herded from one landmark to the next, but you are also responsible for keeping track of departure time.
The boat is scheduled to leave Ano Koufonisi at about 5:15, returning to Agia Anna around 7:00. Be back at the agreed meeting point with time to spare. A late return could affect the whole boat, and the final sailing may take longer if the wind strengthens.
What you get for $94

At $94 per person, this is a good-value day if you would otherwise pay separately for a boat trip, a substantial lunch, drinks, and transport between islands. The cruise covers the major costs that can quietly add up on a full day out: onboard food, water, several soft drinks with lunch, swimming equipment, and access to two very different island settings.
The value is strongest for people who will use the whole package. If you plan to swim at Rina’s Cave, eat onboard, spend time at Ano Koufonisi, and enjoy the sailing itself, the price is reasonable. If you dislike long boat rides or intend to spend most of the day sitting quietly, a shorter local excursion may suit you better.
The lunch is not just a token inclusion. There is enough food to make it a proper midday meal, with useful choices for vegetarians. You will still want to budget for beer, cocktails, snacks, or purchases on Ano Koufonisi.
Who should book this cruise?

I would recommend it to confident swimmers, couples, families with older children, and anyone who wants a full day of sea, swimming, food, and independent beach time. It is especially good for you if jumping from a boat into clear water sounds more appealing than a formal guided tour.
Families should note that unaccompanied minors are not allowed, and the experience is not suitable for non-swimmers or wheelchair users. Parents should also consider the limited shade, open-water swimming, and long return journey. Older children who are comfortable in the sea may have a terrific time, but the crew should not be treated as a substitute for close adult supervision.
This is not the right choice for anyone prone to seasickness. The ride to the islands and back can be long, and wind can make the return rougher or slower. Bring medication if you use it, along with a hat, sunglasses, swimwear, towel, sunscreen, beachwear, and any personal medicine.
Do not book this expecting a history lesson. The crew is available to help, but there is no dedicated guide providing detailed background about Naxos, Rina’s Cave, or Koufonisi. You get scenery and freedom, not a running commentary.
Final verdict: a strong day at sea, with a few conditions

Book this cruise if your ideal Greek day includes a large boat, open water, a hard-to-reach cave, a generous local lunch, and several hours to make your own plans on Koufonisi. The combination of Rina’s Cave and Ano Koufonisi gives the day real variety, and the food makes the $94 fare especially attractive.
Think twice if you need constant shade, firm seating, detailed explanations, or a short ride. The schedule can change with wind, the best sunbeds go early, and the boat spends a lot of time traveling.
For the right person, this is a lively, good-value way to leave Naxos behind for a day. Arrive early, pack for sun and motion, ask about safety, and treat the route as weather-dependent. Do that, and Mikros Kosmos II offers a memorable mix of swimming, simple island life, and a very full Greek lunch.
FAQ

Where does the cruise depart from?
It departs from the taxi piazza at Agia Anna. There is a dock there, and you should look for the sailing boat Mikros Kosmos II. Free transfers are available from specific meeting points, so ask the operator about your location and pickup time.
How long does the cruise last?
The cruise lasts about 8.5 hours. Departure is scheduled for 9:45 in the morning, with arrival back at Agia Anna at approximately 7:00 in the evening.
Is lunch included?
Yes. The onboard meal includes Greek salad, potatoes, pasta, spetzofai, rice with vegetables, fresh bread, fruit, and pork or chicken souvlaki. Vegetarian choices are available. Water, selected soft drinks, orange juice, and wine are provided with lunch.
Is swimming equipment available?
Yes. Snorkel equipment, life jackets, sunbeds, loungers, and floating sea noodles are available on the boat. You should still bring swimwear, a towel, sunscreen, sunglasses, and a sun hat.
How much free time is available on Ano Koufonisi?
The planned stop at Ano Koufonisi lasts about three hours. You can walk through the village, shop, swim at nearby beaches, or pay for a sea taxi to visit other beaches.
Is the cruise suitable for people with seasickness or limited mobility?
No. The experience is not suitable for people prone to seasickness, non-swimmers, or wheelchair users. It also involves open-water swimming and long periods aboard the boat.
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