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Kefalonia is an island ideal for couples and is known to many as the true home of the Homeric Ulysses. A hospitable and extremely beautiful place, ideal for carefree and relaxing holidays by the sea. A few minutes’ drive from the island’s capital, Argostoli, Thalassa is a luxurious boutique hotel in Lassi for adults only and the perfect choice for couples who want to experience romance in a beautiful environment and stay next to the famous beach of Makris Gialos as well as friends who need an intriguing ambience with easy access to the island’s famed beaches and vibrant settlements.
Our adults-only luxury hotel in Kefalonia, stands out among the best hotels on the island offering sublime rooms and suites designed to offer the most romantic and self-pampering vacation ever. Mostly renovated in 2020 as concerns most of its buildings, rooms, suites and all exterior spaces, Thalassa 4-star hotel is one of the best hotels in Kefalonia and exudes a revived aura of elegance and luxury. Eolia Pool Lounge offers scrumptious dishes with local ingredients that honour the Greek and local cuisine as well as a fine wine list with labels from Kefalonia as well as entire Greece. The large and bright lobby features an ambience of heart-warming welcome while it harmoniously connects with the library, where one can make use of the free wireless Internet and the dining room, offering a stunning sea view.


Thalassa Boutique Hotel has been carved in its guests’ memories as the top luxury hotel in Kefalonia Greece and for a good reason. The hotel is one of the best hotels in Lassi Kefalonia and has been masterfully designed to offer unpretentious opulence and a laid-back ambience for your total rejuvenation and self-pampering. Its refurbished utterly romantic character along with the absolute privacy and the seaside location make this top-rated boutique hotel the best choice for honeymooners, couples that want to indulge in quality time with their partner or solo travellers.
Located very close to the famous beach of Makris Gialos and less than 10’ drive from Argostoli, our 4-star seaside hotel in Lassi enjoys a serene yet very convenient location and is one of the best hotels in Lassi Kefalonia. Right above Paliostafida beach and perched on the rocky slopes of the area, the hotel offers a stunning sea view to the entire bay of Lassi from most of its public spaces and its rooms and suites.


Enjoy the most unique holidays in this exquisite adults-only boutique hotel in Lassi and experience total relaxation and rejuvenation within Thalassa Boutique Hotel’s Mediterranean-chic ambience, sublime facilities and personalized concierge services. Leave yourself to the hands of our professional team and let your senses lead the way in a unique experience. Thalassa Boutique Hotel is the top luxury hotel in Kefalonia Greece and the perfect choice for memorable holidays in Kefalonia that will certainly surpass your every expectation.


Only 500m from the popular Makris Gialos and nestled within the enchanting bay of Paliostafida, Thalassa Boutique Hotel enjoys stunning sea views and offers easy access to the most treasured spots of the island.


Come as you are and we will take care of the rest!

Welcome to Thalassa Boutique Hotel 4* Adults only,  sheltered in the majestic gulf of Paliostafida, just far enough away from the bustle of the city, yet strategically positioned within easy reach of the capital, Argostoli and Lassi resort.
Thalassa Boutique Hotel was created to be a family warm welcoming hotel for all guests so as to feel they visited a home away from home. Over the last 20 years, through our strong commitment to the notion of Greek “philoxenia” (hospitality) we tried to bring a breath of fresh air in hospitality. Respecting our principles of Authentic Greek Hospitality we strive to offer an impeccable standard of service, while allowing the guest to lie back, relax and enjoy a harmonious accommodation, immersed in serenity, and through our inspiration of the Greek gastronomy, we bring through our home-made fresh dishes, Greece’s riches, from fresh home-harvested ingredients, and of course tailor-made experiences to fully embrace the best Kefalonia has to offer and satisfying at the same time all senses.
We hope you will have a memorable, relaxed and enjoyable stay and we will all be there for every need or will.

feel every moment

Our Rooms & Suites

Succumb in the ambience of some of the finest luxury sea view rooms and suites in Lassi, only moments away from the beautiful beach of Makris Gialos and many other of Kefalonia’s best beaches.

A private haven with shared pool

Our newly arrived Swim-Up rooms are located at a quiet corner of our Mediterranean Garden, offering a relaxing, exquisite paradise with a private shared pool, sophisticated interiors and quaint verandas.
Relax, rejuvenate & recharge!

Pure, local materials, tantalizing flavours
Breakfast Until 11am!
Eolia Pool Restaurant
Alaia Cocktail Bar

Two cooling freshwater swimming pools invite guests to enjoy a refreshing swim and soak up the sun, lounge the day away on a sunbed under the shade of the umbrellas and quench their thirst with an ice-coffee or a cool cocktail from the pool bar.

We are not pet friendly. We are pet lovers!

Welcome to our pet-friendly haven, where tails wag and hearts are light! Simba, our rescue puppy, the mascot of Thalassa Boutique Hotel, is always ready for playdates! Bring your fur babies for a vacation filled with love, pampering, and joyful memories in our lush garden.

Let’s create paw-some memories together and a tail-wagging good time! 🐾

Book directly

Make your booking directly, through our website, and get take advantage of fantastic perks!

  • Best Rate Guarantee
  • Upgrade options
  • Special Promos
  • Early check-in / Late check-out*
  • Discount vouchers*
  • Complimentary transfers*
  • Free from/to airport transfer for 7 nights’ stay & more

*Upon availability