Review · CAVE BOAT TOURS

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

4.2 · 504 reviews 8.5 hours From $94 Operated by Naxos Island Tours · Bookable on GetYourGuide
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Crystal water, local food, and a long day at sea. This cruise from Agia Anna works because it combines three pleasures in one outing: swimming at hard-to-reach Rina’s Cave, eating a generous Naxian lunch aboard the 25-meter Mikros Kosmos II, and spending three hours on Ano Koufonisi. I especially like the family-run feel and the amount of food included for $94, along with the freedom to spend the island stop your own way.

The main caution is the amount of time spent sailing. The trip lasts about 8.5 hours, and the boat is not fast, so the ride home can feel long, especially when wind slows the return. You should also expect a relaxed day rather than a guided sightseeing tour, with little historical commentary and possible changes to the stops if the weather turns rough.

The cruise in a nutshell

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - The cruise in a nutshell

  • Rina’s Cave is reached only by sea, with about 1.5 hours for swimming, snorkeling, and jumping from the boat.
  • Lunch is a full spread, including souvlaki, pasta, potatoes, rice, salad, bread, fruit, and vegetarian choices.
  • Ano Koufonisi gets three hours, enough for the village, a nearby beach, or a low-cost sea taxi to another beach.
  • Kato Koufonisi depends on weather, and the uninhabited island offers scenery and swimming rather than shops or services.
  • The best front sunbeds go early, with limited shade and no guarantee that a claimed spot will be free later.
  • This suits confident swimmers and sun lovers, not people prone to seasickness or anyone needing wheelchair access.

Starting at Agia Anna with the right expectations

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - Starting at Agia Anna with the right expectations

The meeting point is the taxi piazza at Agia Anna, where a dock leads to the Mikros Kosmos II. Departure is scheduled for 9:45 a.m., with return around 7 p.m. Free transfers operate from certain meeting points, but you need to ask in advance about the exact place and time.

I would arrive early. The front sunbeds are limited, and they are the prime real estate on a full day at sea. You get a better view, more room to stretch out, and a pleasant spot for the long return. Some people hold these beds for the whole day, so arriving 40 minutes early still may not guarantee one.

The boat has sunbeds, loungers, shade, life jackets, snorkel equipment, and foam pool noodles. It is a sizable boat, but comfort depends on how full the sailing is and where you sit. Some seating is less cushioned than the front beds, so bring a towel to use as padding if you are particular about comfort.

This is a cruise for relaxing, swimming, eating, and enjoying the sea. There is no onboard guide giving a running account of Naxos or the islands. The crew is available for practical help, but you should not expect a formal tour lecture or much background on the sites.

The sail along Naxos’ west coast

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - The sail along Naxos’ west coast

The first part of the morning takes you along Naxos’ west coast toward Rina’s Cave. The crossing takes roughly 1.5 hours, and the boat’s slower pace is part of the experience. You see the coast from the water, settle into your place, and let the day open gradually.

This is also where you discover if you are comfortable on a boat. The sea can be calm and beautiful, but wind can pick up, making the return rougher or slower. If you are prone to seasickness, this is not the excursion I would choose. Sit where the crew suggests, keep water nearby, and bring any personal medication you need.

The lack of commentary is worth noting here. You may pass attractive sections of Naxos and other islands without hearing their names or stories. That will not bother you if the sea ride itself is the point, but anyone hoping for a cultural or historical tour should choose a different format.

Rina’s Cave: the day’s best swim

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - Rina’s Cave: the day’s best swim

After about 1.5 hours, the boat reaches Rina’s Cave, a place approachable only from the sea. The stop lasts about 90 minutes, giving you time to swim near the cave, snorkel, and jump into the water from the boat if you are confident.

The cave is the star of the first half. The water is clear, and the combination of rock, open sea, and the boat’s high deck makes this feel more adventurous than a standard beach stop. You can swim toward the nearby pebble beach, where a distinctive freshwater spring adds another unusual touch to the setting.

I would treat the jumping as optional, not as a required part of the fun. The cruise is best for strong, comfortable swimmers. Non-swimmers are not suited to this outing, and children should be supervised closely. Life jackets and flotation noodles are available, but the stop still involves open water and boarding the boat again.

While you swim, the crew prepares lunch. This timing is smart: you return hungry, and the meal is ready rather than leaving you waiting around. Some accounts describe the cave stop as the day’s high point, while others wish it lasted longer. Ninety minutes is enough for a good swim, but it can pass quickly if you want to explore both the cave and the pebble beach.

A generous Naxian lunch on deck

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - A generous Naxian lunch on deck

The included meal is one of the strongest reasons the $94 price feels fair. This is not a token sandwich and a small drink. The spread includes Greek salad, oven potatoes, pasta, spetzofai, rice with vegetables, fresh bread, fruit, and pork or chicken souvlaki.

Vegetarians have a proper meal rather than a reduced plate, with salad, potatoes, rice, and vegetables available. Vegan choices should be discussed before departure, and you should report food allergies in advance so the crew can explain the meal options.

Water is included, along with Coca-Cola, Sprite, and orange juice during lunch. Local wine is served, and some people find it perfectly pleasant while others find it less impressive than the food. Beer, cocktails, extra soft drinks, and snacks cost more and can be purchased onboard.

The cooking has a home-style character, which is part of the charm. Portions are large, so I would eat a light breakfast. After swimming, the food makes sense: simple, filling dishes taste especially good in the sun and sea air. Fresh watermelon and homemade sweet treats may appear during the return sailing, adding a welcome finish to lunch service.

Same corner of the map, a different way in:

Kato Koufonisi when the weather allows

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - Kato Koufonisi when the weather allows

The plan may include Kato Koufonisi, an uninhabited island. Weather determines whether the boat can stop there, and the exact arrangement can change. When conditions allow, the island offers quiet beaches, beautiful water, and a more stripped-back setting than Ano Koufonisi.

Do not expect shops, a village, or a long list of activities at Kato Koufonisi. Its value is the water and the feeling of being somewhere with very little development. If the stop is canceled, the crew may spend more time at another location, but that can be disappointing if you were counting on the full route.

This is a good place to set realistic expectations. The cruise is not built around a packed schedule of attractions. It is built around swimming in scenic places and enjoying the boat. Kato Koufonisi works best if you are happy with a quiet beach stop and do not need constant activity.

Three hours on Ano Koufonisi

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - Three hours on Ano Koufonisi

Ano Koufonisi is the most substantial stop, with about three hours of free time. The island gives you several ways to use that time. You can walk through the cobbled village lanes, swim at a nearby beach, shop, sit for a drink, or take a low-cost sea taxi to another beach.

This flexibility is a major strength. You are not marched from one sight to the next. If you want a slow walk and a swim, you can do that. If the heat is strong, you can keep the walking short and spend more time by the water.

Ammos Beach is often singled out as especially beautiful, with clear water that looks almost like a giant swimming pool. The village itself is compact enough for a brief wander, and there is a supermarket and a boutique selling jewelry. Do not expect a full day of shopping. Three hours is better understood as time for one beach, a village walk, and perhaps a drink.

Some people may find three hours too long, particularly if they stay only in the village. I would plan your stop before stepping ashore. Head for the beach first if swimming is your priority, or ask about a sea taxi if you want to see more of the island’s shoreline.

The long ride home

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - The long ride home

The boat departs Ano Koufonisi at about 5:15 p.m. and is due back at Agia Anna around 7 p.m. The return can take longer than expected if the wind rises. This is the least active part of the day, so bring a book, music, or a simple game if you do not enjoy sitting and watching the sea.

The upside is that you can rest after the island stop. The boat’s open views are lovely, especially as the light changes toward evening, and the crew may serve fruit or a homemade dessert. The downside is simple: after a full day, a slow 2.5-hour-plus ride can feel tiring.

There have also been occasions when the planned stops changed because of wind. Ano Koufonisi may become impossible to reach, or Kato Koufonisi may replace part of the schedule. That is a normal reality of small-island sailing, but the crew should explain changes clearly. Communication in English can be limited at times.

What the $94 price really buys you

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - What the $94 price really buys you

At $94 per person, this is strong value if you want a full day on the water. You are paying for the boat, crew, several swimming opportunities, island time, snorkel gear, flotation equipment, a large lunch, water, lunch drinks, and wine.

You are not paying for a private boat, a history lesson, or polished luxury service. The experience is shared, and the best sunbeds are limited. Extra drinks and snacks cost more, and the boat may feel less comfortable when full.

The food is the biggest value factor. Buying a similar lunch, several drinks, boat access, and transport separately could quickly approach the tour price. The generous portions also make this easier to recommend to families and anyone who wants a simple all-day plan.

Who should book this cruise?

From Ag Anna: Rina's Cave and Ano and Kato Koufonisi Cruise - Who should book this cruise?

I would choose this trip if you:

  • Enjoy swimming from a boat and can manage open water confidently.
  • Want a full day with minimal planning.
  • Like generous, home-style food more than a polished restaurant meal.
  • Want both a quiet sea stop and time on a real island.
  • Are happy to relax without constant commentary.
  • Can handle a long sailing day and possible wind-related changes.

I would skip it if you need wheelchair access, dislike long boat rides, get seasick easily, or want a guided history tour. It is also not ideal if you need guaranteed shade or a guaranteed front sunbed.

Bring sunglasses, a hat, swimwear, towel, sunscreen, beachwear, and personal medication. Avoid high-heeled shoes. Unaccompanied minors are not permitted.

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

Book it if your perfect Naxos day includes clear water, a big lunch, sunbathing, and a few hours to wander Ano Koufonisi. The strongest parts are the swim at Rina’s Cave, the generous food, the friendly family-style service, and the freedom to make your own island plans.

Go in knowing that the ride is long, the commentary is minimal, the front sunbeds go quickly, and weather may alter the route. With those limits understood, this is a very good-value day for confident swimmers who want scenery and relaxation more than formal sightseeing.

FAQ

Where does the cruise depart from?

The meeting point is the taxi piazza at Agia Anna, where there is a dock. Look for the sailing boat Mikros Kosmos II. Free transfers are available from specific meeting points, so ask the provider for details.

What time does the cruise leave and return?

Departure is scheduled for 9:45 a.m. from Agia Anna, with arrival back at approximately 7 p.m. The full activity lasts about 8.5 hours.

How long do you stay at Rina’s Cave?

The planned stop at Rina’s Cave lasts about 1.5 hours. You can swim, snorkel, jump from the boat if you are confident, and visit the nearby pebble beach with its freshwater spring.

Is lunch included?

Yes. Lunch includes a barbecue-style spread with souvlaki, Greek salad, potatoes, pasta, rice with vegetables, spetzofai, bread, and fruit. Vegetarian options are available, and food allergies should be reported in advance.

Are drinks included?

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

How much free time do you get on Ano Koufonisi?

The scheduled stop is about three hours. You can walk through the village, swim at nearby beaches, shop, or take a low-cost sea taxi to visit other beaches.

Is this cruise suitable for non-swimmers or wheelchair users?

No. The cruise is not suitable for non-swimmers or wheelchair users. It is also not recommended for people prone to seasickness. Life jackets and flotation noodles are available, but the activity centers on open-water swimming.

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