From Ag Anna: Rina’s Cave and Ano and Kato Koufonisi Cruise

Rina’s Cave is the star here: a sea-only stop where you can swim into a dramatic rock opening, reach a nearby pebble beach, or jump from the boat if you are confident in the water. The day then shifts from wild coastline to the pretty village and beaches of Ano Koufonisi.

I like the generous homemade lunch, which includes souvlaki, salads, potatoes, pasta, rice, fruit, bread, and vegetarian choices. I also like the three-hour break on Ano Koufonisi, long enough for a beach swim and a walk without making you rush. The drawback is the long time at sea, especially on the return, and the boat is not the right choice if you are prone to seasickness or want detailed commentary.

Key points to know before booking

• Rina’s Cave is reachable only by sea, with about 1.5 hours for swimming, snorkeling, the nearby spring, and optional jumps from the boat.
• Lunch is a full spread, not just a small snack: local dishes, meat skewers, vegetarian food, fruit, bread, water, wine, and soft drinks with the meal.
• Ano Koufonisi gets about three hours, giving you time for the village, nearby beaches, shopping, or a low-cost sea taxi.
• The 25-meter Mikros Kosmos II offers sunbeds, loungers, shade, snorkel gear, and life jackets, though the best front sunbeds are limited.
• This is a relaxed sailing day, not a narrated sightseeing cruise, so you will need to explore independently at each stop.
• Weather can change the route, including the visit to Kato Koufonisi or the planned stop at Ano Koufonisi.

The day begins at Agia Anna and heads for open water

The meeting point is the taxi piazza at Agia Anna, where a dock leads to the sailing boat Mikros Kosmos II. Departure is scheduled for 9:45 a.m., with a return around 7 p.m. That makes this a serious full-day outing, not a quick half-day boat ride.

The route follows Naxos’s west coast before turning toward Rina’s Cave. The ride to the first stop takes about 1.5 hours. You will spend much of that time sitting on deck, watching the coast pass, reading, sunbathing, or chatting with people around you.

I would arrive early if you want one of the front sunbeds. These are limited, and once they are claimed, they may stay occupied for much of the day. Other seating is available, but some people found it less comfortable during the long hours underway. Shade exists, though it is not extensive, so bring a hat and do not assume you can spend the whole day out of the sun.

The boat is large enough to provide a pleasant day at sea, but the experience can feel busy when the boat is full. You should think of it as a shared sailing excursion rather than a private charter. The crew is described as friendly and helpful, with a relaxed family-run feel, but communication in English may be limited at times.

Rina’s Cave gives you the day’s best swim

After the first sailing stretch, the boat reaches Rina’s Cave, a natural sea cave on the southern coast of Naxos. The stop lasts about 1.5 hours, which gives you time to swim, snorkel, and enjoy the clear water without being pushed straight back aboard.

The cave is not reached by road, so arriving by boat gives the place its appeal. You can swim toward the cave opening and explore the water around it. A nearby pebble beach has a distinctive freshwater spring, adding another small feature to the stop. Bring suitable beach shoes if you have them, since pebbles can be awkward underfoot.

For confident swimmers, jumping from the boat is one of the memorable parts of the outing. This is not a formal supervised jumping activity, so you should make your own decision based on your ability and the conditions. Life jackets, snorkel equipment, noodles, and other flotation gear are available on board.

The stop is especially good if you want active time in the water. It is less satisfying if you prefer a guided explanation of the cave or its geology. No guide accompanies the cruise in the usual sightseeing sense, and the crew does not provide a full historical talk about the places you pass.

Lunch is a major part of the value

While you swim, the crew prepares lunch on board. The meal is served after the water stop, which works well because you will likely be ready for something substantial by then.

The spread can include Greek salad, oven potatoes, pasta, spetzofai, rice with vegetables, fresh bread, fruit, and pork or chicken souvlaki. Vegetarian choices include salad, potatoes, and rice with vegetables. Food allergies should be reported in advance so the crew can explain the available choices.

Water is provided throughout the trip. During lunch, you also get Coca-Cola, Sprite, orange juice, and wine. Beer, cocktails, extra soft drinks, and snacks cost more and can be bought on board. The included wine is useful with lunch, though it may not satisfy anyone looking for a carefully chosen bottle or a chilled wine service.

The portions are generous. I would eat a light breakfast, since this is more than a basic boat buffet. The food is simple, familiar Greek fare rather than refined restaurant cooking, but it arrives at exactly the right time after swimming. For a $94 full-day trip, the meal and drinks add real value, particularly for anyone who would otherwise spend money on lunch and drinks at the islands.

Kato Koufonisi depends on the weather

The planned route may include Kato Koufonisi, an uninhabited island with clear water and quiet beaches. Since it has few facilities and little formal sightseeing, the attraction is the setting itself: swimming, a peaceful shore, and a break from the boat.

The stop is weather dependent. Strong wind can change the order of the day or prevent the boat from visiting. If conditions make Ano Koufonisi difficult, the crew may spend more time around Kato Koufonisi instead. That can be pleasant if you want a quiet swim, but it may feel long if you need shops, a village walk, or more activity.

This is worth keeping in mind when you compare the cruise with a direct ferry or an island-hopping plan. The route is flexible for safety and sea conditions, but you are not guaranteed every planned stop in exactly the advertised order.

Three hours on Ano Koufonisi lets you choose your own pace

The main island stop is Ano Koufonisi, where you have about three hours on your own. This is enough time to stroll through the cobbled village streets, browse shops, walk toward a nearby beach, or simply swim and sit by the water.

The island is a good contrast to the boat portion. After several hours at sea, you can stretch your legs and get a quick taste of Koufonisi’s village life. You can also take a low-cost sea taxi to other beaches if one is running and you want to make the most of your free time.

Ammos Beach is specifically noted as a beautiful place to swim, and several parts of Koufonisi are known for clear, pool-like water. Bring your swimsuit under your clothes and carry only what you need. Three hours can pass quickly if you want both a village walk and a beach stop.

The free-time format is important. The crew does not lead you around the island, explain its history, or keep you in a group. I like that freedom, since you can decide between lunch, shopping, swimming, and walking. If you want context about local life or a structured island tour, you will need to arrange that separately.

The return sail is beautiful but long

The boat leaves Ano Koufonisi at about 5:15 p.m. and aims to reach Agia Anna around 7 p.m. The return can take longer than expected when the wind rises. Some passengers found the trip home to be more than 2.5 hours, so plan for a slow, open-water ride rather than a quick transfer.

That final stretch can be one of the nicest parts of the day if you enjoy sitting on deck and watching the islands recede. The crew may serve watermelon and a homemade sweet during the ride, adding a pleasant final snack. Music may also be part of the atmosphere.

Still, this is where seasickness can become an issue. The cruise is not suitable for people who are prone to motion sickness, and non-swimmers may not get much from the main activities. If you know you are sensitive to boats, bring your usual medication and choose a seat with care. Personal medication is specifically listed among the things to bring.

What the boat provides, and what you should pack

Mikros Kosmos II is a 25-meter sailing boat with sunbeds, loungers, snorkel equipment, life jackets, flotation noodles, and a lifebuoy. That equipment means you do not need to bring your own mask or flotation aid, though you may prefer your own snorkel for comfort.

Pack sunglasses, a sun hat, sunscreen, swimwear, a towel, beachwear, and any personal medication. High-heeled shoes are not allowed, and sensible flat footwear is the obvious choice on a boat and pebble beach.

A waterproof bag is useful for your phone and valuables, though it is not listed as a provided item. Keep your belongings compact, since you will move between seating, the swim area, lunch, and the island stop.

There is no clear promise of a formal safety briefing, and one passenger found that concerning. The crew provides life jackets and helps with practical needs, but you should pay attention to any instructions before entering the water and ask if anything is unclear.

How the $94 price works out

At $94 per person, this is not the cheapest way to reach Koufonisi. A simple boat transfer may cost less, and an independent island day gives you more control over timing. But this price includes a full 8.5 hours, the sailing route, a visit to Rina’s Cave, use of onboard equipment, a substantial lunch, water, and several drinks.

The value is strongest if you plan to swim and eat on board. You would otherwise need to pay for a separate boat trip, lunch, drinks, and possibly beach transport on Koufonisi. It is weaker if you mainly want to reach Ano Koufonisi and spend the day there, since the cruise uses much of the day for sailing.

The activity also offers free cancellation up to 24 hours before departure and a reserve-now, pay-later option. Free transfers are available from specific meeting points and times, but you should confirm the details directly rather than assume your hotel is included.

Who will enjoy this cruise most

I would choose this trip if you want a full day of swimming, sun, food, and scenery without planning every connection yourself. It suits confident swimmers, couples, families with older children, and anyone who likes a social boat atmosphere.

It is also a good pick for people who want more than a standard beach day. Rina’s Cave gives you a sea-only setting, while Ano Koufonisi provides a village and beach stop. The combination makes the day feel varied, even though a lot of time is spent sailing.

I would hesitate if you need a wheelchair-friendly activity, dislike long boat rides, or cannot swim. I would also choose another option if your main interest is archaeology, local history, or detailed commentary. The crew is there to help, but the day is built around relaxation and independent time, not guiding.

Should you book the Rina’s Cave and Koufonisi cruise?

Book it if you want an easy, active day at sea with excellent swimming stops, a large homemade lunch, and enough time to explore Ano Koufonisi. The strongest parts are the water around Rina’s Cave, the clear beaches of Koufonisi, and the generous meal included in the price.

Skip it if you are uncomfortable on boats or want a tightly narrated tour. Arrive early for the best seating, bring serious sun protection, report allergies, and keep your schedule flexible in case wind changes the route. For the right kind of passenger, this is a very good-value Naxos day out, with just enough adventure and a lot of open-water time.

FAQ

Where does the cruise depart?

It departs from the taxi piazza at Agia Anna, where you can find the dock and the sailing boat Mikros Kosmos II.

What time does the cruise leave and return?

Departure is scheduled for about 9:45 a.m., with return to Agia Anna at approximately 7 p.m.

How long is the cruise?

The experience lasts about 8.5 hours.

Is lunch included?

Yes. The onboard meal can include Greek salad, potatoes, pasta, spetzofai, rice with vegetables, bread, fruit, and pork or chicken souvlaki.

Are vegetarian options available?

Yes. Vegetarian choices include Greek salad, oven potatoes, and rice with vegetables.

Which drinks are included?

Water is provided, while Coca-Cola, Sprite, orange juice, and wine are provided during lunch. Beer, cocktails, extra soft drinks, and snacks can be purchased separately.

Is snorkel equipment available?

Yes. Snorkel equipment, life jackets, flotation noodles, loungers, sunbeds, and other flotation equipment are available on the boat.

Is Rina’s Cave suitable for swimming?

Yes. The stop allows time for swimming and snorkeling near the cave. Confident swimmers may also jump from the boat.

How much free time is available on Ano Koufonisi?

You have approximately three hours to walk around the village, shop, swim, visit nearby beaches, or use a low-cost sea taxi if available.

Is the cruise guided?

No formal guide is aboard. The crew is available to help, but the cruise does not provide a detailed historical commentary about the cave, islands, or coastline.