You won’t see Rina’s Cave from land. This day cruise mixes sea time with real swimming and a family-style BBQ lunch on a 25-meter sailing boat. The stops are built for people who want turquoise water, cobbled alleys, and a relaxed pace instead of a lecture.

I love the way the day is structured around fresh, local food and multiple chances to get in the water. The Rina’s Cave swim spot feels like the main event, and Ano Koufonisi gives you a change of scenery with free time to wander and lounge. One thing to think about first: it’s a long day on open water, and it’s not ideal if you’re prone to seasickness or you’re not a confident swimmer.

Key highlights at a glance

• Rina’s Cave, reachable only by sea: 1.5 hours at the cave swim area, plus a nearby pebble beach
• Onboard BBQ lunch after swimming: hot Greek dishes, bread, salad, and fruit, with vegetarian/vegan options
• Koufonisia time with your own rhythm: free time on Ano Koufonisi for walking, beaches, and optional sea-taxi hops
• Snorkel gear and sunbathing setup: life jackets, loungers, and snorkel equipment included
• 25-meter sailing boat that doesn’t feel cramped: many people mention comfort and space on board
• Crew at your disposal, no formal guide: you can ask questions, but don’t expect a running history lesson

Rina’s Cave and Koufonisia: what this trip is really about

This is not a “checklist” tour. It’s a full day built around two things that people actually remember: water you can swim in and food that hits the spot after you’ve worked up an appetite. You’re on the Mikros Kosmos II, a 25-meter sailing boat, and the itinerary is paced so you’re not stuck on deck for hours without doing anything.

The vibe is casual and relaxed. There’s no guide onboard giving a formal talk as you sail, so if you want deep historical context, you’ll probably find this trip is more about experience than explanation. If you’re happy to trade commentary for time in the sun, this style works well.

The schedule: your day from Agia Anna to Ano Koufonisi

The cruise leaves at 09:45 from Agia Anna port and returns around 19:00. That 8.5-hour block is long enough to feel like a real day out, not a quick half-day boat ride, and it also means you should plan for some time sailing before each stop.

Sailing along the Naxos west coast (about 1.5 hours)

After departure, you sail along the west coast of Naxos. This part is scenic but also straightforward: you’ll mostly be settling in, grabbing water (included), and finding your spot on deck. It’s a good moment to put on sunscreen, hat up, and get comfortable with the rhythm of sea travel, especially if you’re sensitive to motion.

Stop 1: Rina’s Cave (1.5 hours)

In about 1.5 hours, you reach Rina’s Cave. The stop is 1.5 hours, which is long enough to actually do something rather than just dip a toe. At the cave area, you can swim, and you’ll also have a nearby pebble beach to step onto.

One practical tip: bring the mindset that you might want to swim more than once here. Many people treat this cave stop as the highlight and spend the whole window alternating between floating, snorkeling, and climbing back on to warm up.

There’s also a mention of a unique water spring near the pebble beach. You’ll be close enough to experience it, not just look at the surroundings from afar. For souvenirs, the cave swim area is the kind of place where collecting small beach finds can happen naturally.

Lunch onboard: BBQ right after swimming

Lunch happens as you settle back on the boat. This is when you get the full onboard meal, and it’s a major part of the value.

You’ll be served a mix of dishes, including Greek salad, oven potatoes, pasta, spetzofai, rice with vegetables, fresh bread, and pork or chicken skewers (souvlaki). There’s also vegetarian menu options, with the same structure: salad, potatoes, rice with vegetables, plus bread and other sides. Finish with fresh fruit.

Soft drinks and wine are part of lunch service. People note that wine is included, though it may not be the best chilled. The upside is that you can refill, and the drink service matches the laid-back day rhythm.

Stop 2: Kato Koufonisi (weather permitted)

Next comes Kato Koufonisi, the uninhabited side of Koufonisia. The plan says it’s weather dependent, which matters because this is open-water cruising. When conditions allow, you’ll get another chance to swim and enjoy the coastline from the water.

Importantly, the exact time at Kato Koufonisi isn’t spelled out in the schedule you provided, so you should mentally expect this stop to be shorter than Ano’s and more focused on swimming rather than wandering streets.

Stop 3: Ano Koufonisi (3 hours free time)

Then you get the 3-hour free time on Ano Koufonisi. This is where the day shifts from sea activities to island life. You can walk the village, soak in the calm, and choose a beach to swim from.

A practical option mentioned: you can take a low-cost sea taxi to reach other beaches. That’s a helpful move if you want variety without having to plan ferry connections on your own.

Onboard life: boat comfort, sunbeds, and what you’ll actually do

This is a sun-and-splash day. You’re going to spend time on deck between swims and meals, so what you choose to bring and how you position yourself matters.

Sunbeds and shade: get there with a plan

The boat has lounging options, and people recommend getting there early to grab sunbeds at the front. There are only limited “prime” spots, and once things are occupied, you may not want to fight for space. Shade also isn’t guaranteed everywhere, so hats and sunglasses aren’t a nice-to-have.

If you like calmer seating, you might also want to pick a spot where you can see the water but still get wind protection. On the long return sail, comfort can make a difference.

Snorkel and swimming gear included

You’re provided snorkel equipment, life jackets, and loungers/lifebuoys. That’s a real advantage because you don’t have to buy or rent gear before you go.

If you’re an adventurous swimmer, Rina’s Cave is the kind of place that rewards confidence. There’s also mention of being able to jump from above if you feel adventurous, so you should only do that if you’re comfortable with water entry and footing.

No formal guide onboard, crew helps instead

A key expectation: this cruise is meant to feel like you’re spending the day with the boat crew, not touring with a historian. People specifically note that there’s no guide onboard, and the crew is available for needs rather than running a commentary program. You can still ask questions, but you shouldn’t expect an organized set of talks about what you’re seeing.

If you want context, you’ll have to supply it yourself on the spot. If your goal is mostly swimming and time on Koufonisia, you’ll probably feel right at home.

Food and value: why the lunch is a big deal

At $94 per person for an 8.5-hour sailing day with multiple swim stops, food, and included drinks during lunch, the value comes from how much is bundled into one cost. You’re not just paying for transport; you’re paying for meals and the opportunity to access places that are hard to reach on your own.

Lunch is the standout. The list is long and the portions seem to satisfy people who show up hungry after a swim. You get a mix of hot dishes, sides, and bread, plus fresh fruit. For vegetarians and vegans, there are specific menu options spelled out rather than last-minute adjustments.

Even the drink service is part of the package: water is included, and lunch comes with free Coca-Cola, Sprite, orange juice, plus wine and soft drinks during the meal window.

One small reality check: you may still want extra cash if you want beer, cocktails, or extra snacks, since those are not included and can be purchased on board.

The best time to choose this cruise (and who should skip it)

This trip is a strong fit if:

• You want swimming at Rina’s Cave and like the idea of a sea-only location
• You want Ano Koufonisi free time instead of being walked around on a tight schedule
• You like a relaxed boat day with good meals and time to self-explore
• You’re comfortable being without a guided history talk

It’s not the right match if:

• You’re not a swimmer. The activity explicitly says it’s not suitable for non-swimmers.
• You’re wheelchair users. Accessibility isn’t set up for that.
• You’re prone to seasickness. This includes the sailing segments and the open-water motion between stops.
• You hate the idea of downtime. This is a relax-and-go tour, not a nonstop adrenaline route.

If you have kids, the rules say unaccompanied minors aren’t allowed. And because swimming is central, it’s worth considering the family’s comfort level in open water.

A few practical tips that can save your day

These are small things that make a big difference on a day like this.

• Bring swimwear, towel, and sunscreen. You’ll likely go from boat to water quickly.
• Pack a hat and sunglasses. Shade is limited in key places, especially on the front deck.
• If you get seasick easily, plan carefully. The cruise is not targeted at motion-sensitive passengers.
• Bring a light layer for the sail back. The sea wind can feel cooler even on warm days.
• If you want safety details, speak up early. Some people note that the safety briefing wasn’t as thorough as expected, so ask the crew about any emergency procedures on board so you feel confident.

Also, be ready for a long return. Some reviews mention the ride back feels longer, likely due to winds. If that’s you, bring something to pass time.

Should you book the Mikros Kosmos II cruise to Rina’s Cave and Koufonisia?

I’d book it if your idea of a perfect day in Greece is water access plus a solid meal, with enough free time to enjoy Koufonisia at your own pace. The combination of Rina’s Cave, Ano Koufonisi, included snacks and lunch, and the overall “family-run” feel make it good value for an 8.5-hour sailing day.

I would hesitate if you need a guided historical experience, or if you’re seasick-prone. Also, show up ready to swim and sunbathe, because this cruise rewards the people who embrace the water rather than just watch from the rail.

If that sounds like your travel style, this is one of the easiest ways to turn Naxos-area time into a true Koufonisia day.

FAQ

How long is the cruise?

The duration is listed as 8.5 hours.

Where does the tour start and end?

It departs from Agia Anna port at 09:45 and returns to Agia Anna port at around 19:00.

What stops are included?

The itinerary includes Rina’s Cave (about 1.5 hours), Kato Koufonisi (weather permitted), and Ano Koufonisi (3 hours of free time).

Is lunch included, and is there a vegetarian option?

Yes. Lunch onboard includes multiple dishes (Greek salad, potatoes, pasta, spetzofai, rice with vegetables, bread, souvlaki options, and fruit). There are also vegetarian menu options.

Are drinks included?

Water is included. During lunch, soft drinks are provided, and wine is also included. Beer, cocktails, and other snacks are not included.

What should I bring for the day?

Bring sunglasses, sun hat, swimwear, towel, and sunscreen. You should also bring beachwear and any personal medication.