🌿 Eco Stay Bungalows in Otter Valley, Phu Long Village, Cát Bà Island
Wake up to birdsong and the gentle rustle of mangrove leaves at Eco Stay Cat Ba, a hidden retreat nestled deep within the lush mangrove forests of Otter Valley in Phu Long Village. Surrounded by calm waterways, tropical greenery, and the natural rhythms of the forest, our eco-friendly bungalows offer a peaceful escape from the busy world.
Built with natural materials and designed to blend harmoniously with the landscape, each boutique bungalow provides simple comfort, open-air views over green mangroves, and a deep connection to nature. Enjoy sunrise kayaking through mangrove channels, watch fireflies at night, or relax in a hammock listening to the sounds of the forest.
✅ Eco-friendly wooden bungalows with private terraces
✅ Kayak & boat tours through lush mangroves in Otter Valley
✅ Local meals featuring fresh seafood & village produces at Green Mangroves Restaurant
✅ Perfect for nature lovers, photographers & peaceful retreats
At Cabalina Retreat Catba, you don’t just stay in nature — you become part of it.
🌿 Ao Coi Otter Valley – Hidden Gem in the Mangroves of Phu Long Village, Cát Bà
Tucked away in the tranquil mangrove forests of Phu Long Village, Ao Coi – Otter Valley is a peaceful escape where nature remains untouched and life moves at a slower, gentler pace. Surrounded by lush green forests, calm waterways, and the songs of birds and cicadas, this hidden valley offers a glimpse into the wild heart of Cát Bà Island.
Glide through winding channels by kayak or boat, breathe in the fresh sea breeze, and watch local fishermen working in harmony with the tides. With its serene atmosphere, diverse wildlife, and picture-perfect scenery, Ao Coi is an ideal destination for nature lovers, photographers, and anyone seeking quiet connection with Vietnam’s coastal ecosystem.
✅ Explore by kayak, sup or local boat
✅ Discover the Thien Long Cave by boat
✅ Home to rich mangrove forests and rare wildlife
✅ Perfect for eco-tours, nature walks & peaceful retreats
✅ Located just a short ride from Cát Bà Town
Discover the untouched charm of Ao Coi valley – where the mangroves whisper, the otters play, and time stands still.
Ao Coi Otter Valley is a real aosis located in Catba natural park, surrounded by mangrove forests and Phu Long river. From here we will have chances to explorer the untouched nature of Cat Ba with Thien Long cave and submerged mangrove forests . We offer kayaking, boating and trekking trips to really get off the beaten tracks like no Other in Catba archipelago that go beyond the ordinary.
⛺ Ao Coi Camping – Sleep Under the Stars in Otter Valley, Phu Long Village, Cát Bà Island
Escape the crowds and reconnect with nature at Ao Coi Otter Valley — a peaceful camping hideaway nestled deep in the mangrove forests of Phu Long Village on Cát Bà Island. Surrounded by lush greenery, calm waterways, and the soothing sounds of nature, this is the perfect place to slow down and truly experience Vietnam’s wild side.
Set up your tent by the water’s edge or stay in our ready-made eco camp, and enjoy a night under a canopy of stars. Spend your day kayaking through the mangrove channels, swimming in crystal-clear lagoons, or simply relaxing in a hammock listening to the forest come alive. As night falls, gather around a campfire, share stories, and watch the fireflies dance across the water.
✅ Eco camping area surrounded by mangroves & mountains
✅ Kayaks, BBQ, and campfire experiences available
✅ Ideal for groups, couples & nature lovers
✅ Easy access from Cát Bà Town
At Ao Coi Valley Camping, every moment is pure and peaceful — just you, the stars, and the sounds of the wild.
Thien Long Cave captivates visitors with its stunning beauty. After passing through a small gate, visitors find themselves in an endless space with interconnected chambers resembling a maze in paradise. The space is adorned with a gracefully arched stone ceiling featuring deep circular holes ranging from 1.5 to 2.1 meters high. Rows of stalactites showcase their pristine beauty, creating a fascinating natural landscape. Thien Long Cave is divided into three distinct sections with a myriad of stalactites and stalagmites that have formed over millions of years, resembling droplets of cool, clear water.
In the first section of the cave, you will encounter a stone roof structure with a 1.5-meter-tall stone column, evoking images of mystical transformations. You can tap on the hanging stalactites resembling trees and listen to the sound they produce, but avoid exerting too much force.
The second section features a wide vault with multiple entrances created by curved and hanging stalactite arches. Over the years, thousands of layers of stalactites have formed ascending steps, resembling a scene from a fairy tale. The second cave is a world of giant animal-shaped formations sculpted by stalactites, welcoming visitors in a friendly manner.
To reach the third section, you must climb over a large rock resembling a turtle. It reveals a different world adorned with various stone formations. The third cave is divided into two areas: on the left is the Palace of the Deity, and on the right is a Buddhist temple with a golden shrine, dragon thrones, statues of deities, fairies, and four divine figures carved on dragon columns. All of these features are created from stimulating stalactite blocks that ignite the human imagination.
Trekking – Camping – Kayaking - Snorkeling in Catba Natural Park and Lan Ha bay
- ( 02 days / 01 night tour )
- Pick up/Drop off from your hotel/homestay in Cat Ba town
Day 01: Lan Ha bay - Catba National Park ( Lunch and Dinner included )
08.00 Take a taxi boat to Viet Hai village located in the heart of natural park. Ride bicycle pass the valleys and rice field to the village, 2-3 hours trekking through the mountain rain forest and valleys, climb up to the top of the mountain, Navy Peak where you have a great mountain and bay view. Walk down and ride bicycle back the boat, continue the boat to Lan Ha Bay.
13.15 Have lunch on boat.
14.30 Enjoy a kayaking expedition to discover the green bay, snorkeling to see the coral reefs
17.00 Camping on a deserted beach, swimming.
19.00 Have dinner with BBQ at camp – fire. Overnight in the camp or bungalow (depend the weather).
Day 02: Lan Ha bay - Catba Town ( Breakfast and Lunch included )
After have breakfast, boat takes you to Ha Long Bay, enjoy with hundreds of limestone island. Keep cruising to Ha Long Bay to sightseeing the most beautiful landscapes at less touristy areas. Kayaking through the rock arch to hidden lagoons and tunnels to discover the Bat cave, Dark and Bright cave (or Hang Ca).
11.15 Seafood lunch on the boat.
Swimming at secluded sandy beach at Ba Trai Dao lagoon. Snorkeling is optional..
Return to Cat Ba town at 12.30 (if you need to go back Hanoi), If you stay another night in Cat Ba town, we will drop of at your hotel/homestay. End of our service
This trip is included:
- Boat, kayaks, snorkeling gears, dry bags, headlamps, camping equipment or bungalow, swimming , entrance fees, all meals, drinking water, English speaking local guide
This trip is excluded:
- Drinks are not mentioned
- Gratuities and Tips
- Please feel free to contact us at: +84- 912 555 208 for instant support and booking. We will respond you shortly within 24h
Cabalina Retreat is a must see farmstay to relax, unwind in Catba green island . If you are having some troubles in finding your right retreat or Halong Bay overnight cruise, please feel free to contact us at anytime, we're more than happy to assist you
Cannon Fort - Top view on Cat Ba island
In about 1938, the French occupied Cat Ba island, after investigating the island, French army discovered that among 366 islands of Cat Ba archipelago, the moutain with the height of 177m is located in the South and meets impotant requirements for observation and self-defence in the seashore. Therefore, they choose this mountain to palce “Height 177”. In 1942, they decided to arrange cannon battle field here. In some recent years, the sightseeing place “Cannon Fort” has attracted a large number of visitors and is one of indispensable attractions every visistors come to Cat Ba island. Apart from trench sections embanked with large and thick cubic meters of stone, bulky sections compared with domes going deep into hill side and enough large space for the whole delegation to pass though. All neglected and simple features bring tourists a special impression of historical evidence which is nearly undamages.
For a lovely cruise in Lan Ha bay, please explore www.blueswimmeradventures.com fore more informations
Command post of fortress
The whole fortress is under direation of command post. Orders made by the Command post will be sent to other departmants. This is also place where activities of the fortress command post as well as meetings of fighting plan happen.
Cannon no.1 and no.2 of “Cannon Fort” can control the whole gateway of Hai Phong Port. Also in this height, during the battle against war escalating to the North of American air force, Cat Ba soldiers and people came here to form an air-defence battle field with 12.7 mm cannon and rifles. In the air-defence battle on the Height 177, Vietnamese army and people shot down 6 American planes that contributed to glorious feats of Viet Nam.
Military airport
This used to be the location of French transporting helicopter. In the future, when Cat Ba is allowed to open routes, it will be the park, a favourable means for tourists to Cat Ba.
Historical Objects Showroom
There is a map table placed in the middle of traditional room to describe an overall picture of Cat Ba island focussing on the Height 177. The traditional room records a heroic time of Cat Ba's people through models, weapons, display tools and objects used to in the mighty wars of Viet Nam. This is not only tourist attraction but also education space of national history.
Love room
This place is for family members to visit and encourage soldiers who are protecting the island all day and night. It is the space to share love of parents, wife and children. From that meaning. The room is called love room.
Atomic bomb shelter
Atomic bomb shelter is also called U-Tunnel shelter because it is uniquely built based on emulation of letter U. This type of shelter not only tunnel helping soldiers to avoid enemy but also partially describes their daily life during war. The shelter can hold 500 people with dining-room, kitchen, eating room and room for patients to recover from their illness. It is designed with ventilation way up to airport area. Tourists can touch rock walls while walking to feel coolness inside the shelter.
BBQ in Lan Ha Bay or at Otter Valley
After some enjoyable kayaking, there is no better way of treating yourself than with a private seafood barbecue on an unspoilt beach. Within minutes a quiet beach is transformed into a romantic spot with beautiful umbrellas providing shade and an elegant dining table right on the beach. Our crew will invite you for a BBQ lunch on the beach or at private valley – as if it were a wonderful gift granted by a mermaid. Imagine for a moment that you are the only people on earth enjoying a fabulous meal under the clear blue sky on your own private beach or private valley.
Start with a glass of wine and proceed to enjoy an array of succulent, grilled seafood. The melodious music of the waves will put the finishing touches to the perfect, dreamy ambience. This BBQ on the beach is offered and included in 03 day 02 night cruise with Sunlight Classics and other longer itinerary.
