The best part of this private cruise is the freedom to trade Athens’ city noise for quiet coves, clear water, and islands you cannot reach by road. You can swim near the Atlantis shipwreck, stop at Agistri’s sheltered Megali Bali bay, eat in the fishing village of Perdika, and finish with snorkeling or a walk on Moni.

I like the small-group setup, limited to your party of up to 11, and the useful extras: snorkel gear, sea scooters, water toys, drinks, snacks, WiFi, and bottled water. I also like the crew’s flexible approach. Vasilis has arranged lunch and transfers for some groups, while captains Apollo and Vasilis are praised for being friendly, clear, and easy to work with.

The main catch is cost. The listed rate is $1,806.17 per group, before the separate €450 fuel surcharge. That can be fair for a large family or group, but it is a serious expense for two or three people. The nine-hour day also gives you a lot of water time, so anyone wanting a long, detailed visit to each island may find the schedule brisk.

Key points before you book

• The Atlantis shipwreck comes first: You spend about two hours and 15 minutes near Dorousa, a small islet opposite Aponisos, with time to explore the wreck area from the water.
• Megali Bali is a sheltered swim stop: Agistri’s small bay near Limenaria is protected by cliffs and thick greenery, making it a good place to get in the water.
• Perdika is your lunch stop: This hilltop fishing village has Cycladic-style buildings, sea views, and local seafood restaurants.
• Moni offers the most natural setting: The uninhabited island has clear water, beaches, snorkeling, walking paths, and wildlife such as deer, Kri-Kri goats, peacocks, squirrels, and falcons.
• Your group controls the mood: You can prioritize swimming, lunch, a drink, a short walk, or simply time on deck.
• The fuel fee matters: Add €450 per booking to the advertised group price when comparing this charter with other boat trips.

Leaving Athens from Agios Kosmas Marina

The boat departs at 10:00 am from Agios Kosmas Marina on Leof. Poseidonos 18 in Elliniko. The tour returns to the same marina by the end of the day, and the full outing lasts about nine hours.

That start point is useful if you are staying in the southern part of Athens, near the coast, or close to public transport. If you are staying in central Athens, allow time to reach the marina. Hotel pickup is not part of the standard inclusions, though the crew has arranged transfers for some groups, so ask about this before you pay.

The schedule has one helpful bit of flexibility. The day can begin at a time you choose, but it must finish by 7:00 pm. That lets you discuss an earlier or later departure with the operator, depending on your plans and the conditions at sea.

This is a private activity, not a shared sightseeing boat. Only your party joins, with space for up to 11 people. That distinction matters. You are not waiting for strangers to finish lunch or forcing a family’s quiet swim around another group’s music and movement. You can ask the skipper to slow the pace, change the balance between swimming and shore time, or spend longer in a favorite bay, within the nine-hour limit.

The first stop near Dorousa and the Atlantis wreck

The cruise begins southwest of Agistri, at the small islet of Dorousa, also written as Dorousa in tour information. It lies about half a nautical mile opposite Aponisos and is part of the Agistri community.

The attraction here is the Atlantis shipwreck. The stop lasts around two hours and 15 minutes, which gives you a substantial opening visit rather than a quick photo pause. You can expect to explore from the boat, with the crew providing access to snorkeling equipment and water toys. The exact conditions will depend on the sea and weather.

This is a strong start for anyone who wants the day to feel active. The wreck adds a point of interest beyond simply anchoring in pretty water, and the boat gives you a view of the coast that you cannot get from a road or ordinary beach visit.

You should also keep expectations sensible. The information provided does not describe a guided wreck tour, underwater instruction, or a certified scuba experience. Think of this as a private boat stop with the chance to swim, snorkel, and see the wreck area, not as a formal archaeological visit.

The opening stop may also feel long if your group prefers cafés, villages, or a slower morning. Tell the crew what you want early. One benefit of a private charter is that your preferences can shape the day.

Megali Bali, Agistri’s quiet swimming cove

The next stop is Agistri, where the boat anchors at Megali Bali beach near Limenaria. This is a small bay framed by rugged cliffs and dense greenery. Since it is accessible by boat, the setting feels more removed than a standard beach stop.

The scheduled time is about one hour and 45 minutes. That is enough for a proper swim, a little snorkeling, or time on the boat with a drink. The bay’s sheltered position is especially useful on a breezy day, since the cliffs help protect the anchorage from wind.

I would treat this as the pure swimming part of the trip. There is no planned village visit here, so bring your swimsuit under your clothes and keep a towel handy. The boat includes snorkeling equipment, sea scooters, and other water toys, although the precise equipment available on your departure should be confirmed if a particular item matters to you.

Megali Bali also shows why a private boat can be more rewarding than trying to link several islands by ferry. You are not using the stop merely to say you touched Agistri. You are reaching a cove selected for its water and shelter, then moving on without spending the day working around public transport.

Lunch and a hilltop view in Perdika

Perdika, on Aegina, is the most town-focused part of the day. This small fishing village sits on a hill and has views over the blue water. Its buildings have several features associated with traditional Cycladic design, giving the village a different feel from the swimming coves.

The stop lasts about two hours and 30 minutes. That is the longest shore-oriented break, and it is intended for lunch at one of the local seafood restaurants. The crew can help organize a reservation, a useful service when your group includes children, older family members, or anyone who dislikes making decisions after a long morning in the sun.

Lunch is not included in the tour price, so plan for an additional restaurant bill. The listed inclusions cover snacks, alcoholic drinks, soda, and water on board, but not a meal ashore. Ask the operator which restaurant is planned and what reservation arrangements are available.

Perdika is also your chance to stretch your legs and see a little local life. Still, two and a half hours can feel long if you want to spend every minute swimming. You can discuss the timing with the skipper, but the village works best as a relaxed middle-of-the-day pause rather than a rushed stop between anchorages.

I particularly like the rhythm here. After two water-based stops, a meal with a view gives you a break from swimming and sun. It also keeps the trip from becoming a simple sequence of beaches.

Moni Island for snorkeling and wildlife

The final stop is Moni, a small island beside Aegina. Moni has no permanent residents and no buildings, so it offers the most undeveloped setting of the day. The water is clear, and the beaches are suited to swimming and snorkeling.

The boat spends about two hours and 30 minutes here, usually in the afternoon. You can stay in the water, have a drink, use the snorkeling gear, or walk through the island’s natural setting. The available details also mention deer, Kri-Kri goats, squirrels, peacocks, and falcons.

Do not treat Moni as a built-up beach resort. There are no listed shops, streets, or permanent facilities. That is the appeal, but it also means you should rely on the boat for water, snacks, and other basic comforts. The tour includes bottled water, snacks, soda, and alcoholic drinks, which makes this final stop easier than visiting an unserviced island independently.

Moni is a good finish because you can choose your own level of activity. Some people will want to snorkel until the last possible minute. Others will prefer a drink, a short walk, and a quiet look across the water. Families can split up without losing the benefits of a private boat, provided everyone follows the crew’s safety instructions.

The wildlife is a bonus, not a guarantee. Animals may be visible, but you should not book this as a dedicated wildlife tour. The main reason to come is the clear water, open setting, and lack of buildings.

What the boat service adds to the day

The package includes a skipper and crew, WiFi, bottled water, snacks, soda, alcoholic drinks, snorkeling equipment, sea scooters, and water toys. Those details make a difference on a hot day. You can swim without having to rent basic gear at each stop, and drinks and small snacks are already available between meals.

The strongest service detail is the crew’s willingness to help with the day’s practical parts. Apollo is identified as a captain who was polite and professional, while Vasilis is associated with itinerary planning, lunch arrangements, and transfer help. Another captain named Vasileios is noted for planning a day around Aegina and Moni.

Names and crew assignments may vary, so ask who will be on board when you book. The important point is to tell the team what your party actually wants. If you have young children, a non-swimmer, a birthday, or a strong preference for lunch over extra stops, say so in advance.

The boat itself is repeatedly described as clean, modern, well maintained, and comfortable. One family of five with three small children appreciated the towels, fruit, children’s drinks, Greek rosé, and charcuterie board. These items are useful details, though not every extra food arrangement should be assumed unless the operator confirms it for your booking.

Who gets the best value from this private charter

The price is $1,806.17 for the group, plus a €450 fuel surcharge per booking. Since the price is not per person, the value improves as your group gets larger. For 10 or 11 people, the cost can make sense when compared with booking several seats, arranging separate transfers, and paying for water activities independently.

For a couple, the calculation is different. You are paying for privacy, control, and a full boat day rather than simply transportation between islands. That may be exactly what you want for a special occasion, but it is not the budget choice.

I see the best fit for:

• Families who want private space and an easy way to combine swimming with lunch
• Groups of friends who value drinks, water toys, and flexible timing
• Visitors with one free day who want several Saronic Gulf stops without planning ferry connections
• People who prefer quiet bays to crowded organized beaches
• Anyone celebrating a birthday, anniversary, or family occasion

The trip is less suitable if your main goal is extensive sightseeing in Aegina or Agistri. You get selected stops, not a full island tour. It is also not ideal if you dislike boats, want a fixed museum program, or need a low-cost excursion.

Practical details that can affect your decision

Confirmation is provided when you book, and the activity is offered in English. Service animals are allowed, the meeting point is near public transportation, and most people can participate.

The tour depends on good weather. If poor conditions cancel the trip, you can choose another date or receive a full refund. You can also cancel for a full refund if you do so at least 24 hours before the start time. Changes or cancellations made inside that 24-hour window are not accepted for a refund.

The 10:00 am start is standard, but the activity can begin at another agreed time as long as it finishes by 7:00 pm. Confirm the exact departure time, fuel surcharge, pickup plan, and lunch arrangements before the day.

Since the boat returns to Agios Kosmas Marina, think about your evening plans. Do not schedule a tight airport transfer or a fixed dinner immediately after the expected return. Sea conditions and anchoring time can affect the day, even when the planned duration is nine hours.

Should you book this Agistri, Aegina, and Moni boat trip?

Book it if you want a private, flexible day built around swimming, good food, and quiet coastal stops. The combination is well chosen: a shipwreck area for interest, Agistri for a sheltered swim, Perdika for seafood and village views, and Moni for clear water and wildlife.

The decision comes down to group size and priorities. With a full party, the fixed group price spreads more comfortably, and the private format gives you real control over the pace. With only two or three people, the same price requires a strong preference for privacy and a willingness to pay for comfort.

Before booking, ask three direct questions: who will captain the boat, what is included in the food setup, and how the €450 fuel surcharge will be handled. If the answers fit your plans, this is a polished way to spend a day beyond Athens without giving up comfort or flexibility.

FAQ

Where does the boat trip start and finish?

The trip starts and ends at Agios Kosmas Marina, Leof. Poseidonos 18, Elliniko 167 77, Greece.

What time does the tour start?

The standard start time is 10:00 am. A different start time can be arranged, but the activity must finish by 7:00 pm.

How long does the boat trip last?

The experience lasts approximately nine hours.

How many people can join the private boat?

The private tour is for your group only and can accommodate up to 11 people.

Is fuel included in the listed price?

No. A fuel surcharge of €450 per booking is not included in the advertised price.

What happens if bad weather cancels the trip?

If poor weather causes the operator to cancel, you can select a different date or receive a full refund.