Thalassa Boutique Hotel - Adults Only Argostoli  Exterior photoThalassa Boutique Hotel - Adults Only Argostoli  Exterior photoThalassa Boutique Hotel - Adults Only Argostoli  Exterior photo

Thalassa Boutique Hotel - Adults Only in Argostoli (Kefalonia)

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Check rooms and rates
From$178 /night
Check-in
16Sept
Check-out
17Sept
Rooms and Guests2 Guests, 1 Room
Key details

About the Hotel

Lassi, Argostoli (Kefalonia), 28100
-
Near Makris Gialos Beach
Perfect
9.1
9.2
/10
4.8
4.5
/5

Luxury adults-only boutique hotel in Argostoli with sea views and swim-up rooms

Dining and Bar Experiences

The hotel serves a gourmet breakfast made with organic and locally sourced ingredients in a dining area overlooking the Ionian Sea. The on-site Eolia restaurant offers lunch and dinner menus emphasizing local and organic produce, with a themed BBQ night available weekly. Evening cocktails and light meals are served at the Alaia Lounge Bar, which provides panoramic sea views and a curated drink list.

Pool and Wellness Facilities

Thalassa Boutique Hotel has two freshwater swimming pools set amid lush Mediterranean gardens, with comfortable sun loungers and umbrellas provided. The fitness center is equipped for active guests, while the spa offers massages including full body, head, and foot treatments. Swim-up rooms provide direct pool access from private terraces, adding a layer of privacy and convenience.

Accommodations and Room Types

Rooms feature marbled bathrooms, balconies with sea or garden views, and tea-and-coffee-making facilities. The hotel offers deluxe garden rooms, swim-up suites, and superior rooms with spacious walk-in showers and large beds. All accommodations include air conditioning, satellite TV, and a safety deposit box, with daily housekeeping and fresh towels.

Location and Nearby Attractions

The hotel is 250 metres from Makris Yialos sandy beach and within a 10-minute walk to the centre of Lassi village with its bars, restaurants, and shops. Argostoli city center and cultural landmarks are a short taxi ride away, and the hotel offers airport shuttle and car hire services. Free private parking and an electric vehicle charging station are available on-site for guests exploring the island.

Services and Guest Amenities

A 24-hour front desk and personalized concierge service help guests arrange local excursions, restaurant reservations, and transport. The hotel provides room service, daily housekeeping, laundry and dry cleaning, as well as soundproof rooms for added quiet. Pet-friendly policies are in place, with designated areas and considerations for guests traveling with small pets.

Highlights

Location: 250 metres from Makris Yialos beach

Rooms: Swim-up suites and deluxe garden rooms

Dining: Gourmet breakfast with local organic ingredients

Wellness: Two freshwater pools and spa massages

Services: Personal concierge and airport shuttle

Must-do experiences

  • Savor fresh seafood at Taverna To Kofini, a local favorite.
  • Visit the charming Fish Market for the freshest local catches.
  • Explore the stunning Melissani Cave for breathtaking views.
  • Enjoy a wine tasting at the local Robola winery, a regional gem.
  • Stroll through Argostoli's Waterfront Promenade at sunset.

Choose your island room type

Thalassa Boutique Hotel - Adults Only offers a variety of rooms including double rooms, family rooms, and suites with breakfast, free cancelations, and special deals
  • Superior Double or Twin Room
    2 persons
    28 sq. feet
    1 Double bed
    Air conditioning
    Balcony
  • Superior Double or Twin Room Garden View
    2 persons
    30 sq. feet
    1 Double bed
    Air conditioning
    Balcony
  • Deluxe Double Room
    2 persons
    28 sq. feet
    1 Double bed
    Air conditioning
    Balcony
Show all rooms

Price and Room Availability Calendar

Check availability and prices for your dates now!
September 2026 - September 2027
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Check-in/ Check-out

Facilities

Thalassa Boutique Hotel - Adults Only offers amenities for your comfortable stay and unforgettable experiences
Facilities: Perfect
9.2/10Review score

General

  • Non-smoking rooms
  • Wi-Fi
  • Parking
  • Safe deposit box
  • 24-hour reception
  • Pets allowed
  • Security
  • Adults only
  • Fireplace
  • Smoke detectors
  • Electric vehicle charging station
  • Fire extinguishers

Sports & Fitness

  • Fitness centre

Guest Parking

  • Private parking is possible on site for free.

Services

  • Airport shuttle
  • Room service
  • Housekeeping
  • Car hire
  • Laundry
  • Dry cleaning
  • Tours/Ticket assistance

Dining

  • Restaurant
  • Bar/ Lounge area

Business

  • Fax/Photocopying

Spa & Leisure

  • Seasonal outdoor pool
  • Beach umbrellas
  • Sun loungers
  • Sun terrace
  • Garden area
  • Spa centre
  • Back massage
  • Head massage
  • Full body massage
  • Foot massage

Room features

  • Air conditioning
  • Soundproofed rooms
  • Garden furniture
  • Ironing facilities

Bathroom

  • Free toiletries

Media

  • AM/FM alarm clock
Show more

Thalassa Boutique Hotel - Adults Only: Location on the Island

Lassi, Argostoli (Kefalonia), 28100
Explore Argostoli (Kefalonia)
Explore Lassi and Beyond
  • Top Attractions
  • Activities
  • Dining
  • Entertainment
Makris Gialos Beach
Makris Gialos Beach
10 minutes' walk
Vibrant sandy beach known for its clear waters, ideal for sunbathing and swimming. Beachside cafes enhance the experience.
Casa Rossa
Casa Rossa
9 minutes' walk
Historic mansion offering a glimpse into local culture. Beautiful architecture and gardens make it a peaceful visit.
Argostoli Lagoon
30 minutes' walk
A picturesque lagoon perfect for birdwatching and peaceful walks. A lush environment to unwind in nature.
Bridge De Bosset and its Monument
Bridge De Bosset and its Monument
10 minutes' drive
A historical bridge with scenic views, ideal for photography. Explore the nearby monument commemorating the locals.
Outdoor Kefalonia
Outdoor Kefalonia
7 minutes' walk
Adventure hub offering kayaking and biking options. Perfect for thrill-seekers looking to explore coastal areas.
Yoga Retreats
7 minutes' drive
Local yoga studios provide relaxing sessions. Ideal for those seeking peace and wellness amid stunning landscapes.
Tzogias Taverna
9 minutes' walk
Traditional taverna serving fresh seafood and local dishes. Charming atmosphere with rustic décor and friendly service.
Aqua Marina
7 minutes' walk
Casual dining with a diverse menu, including vegetarian options. Lovely views enhance the dining experience.
Aquarius Bar
Aquarius Bar
10 minutes' walk
Lively bar featuring music and cocktails. A great spot for socializing and enjoying regional drinks.
So Simple Music Bar
So Simple Music Bar
10 minutes' walk
Cozy venue with live music performances throughout the week. Suitable for all ages, promoting a welcoming vibe.
Getting around the Greek Islands
  • City Centre
    Argostoli (Kefalonia) 24 min  ·  1.2 mi
  • Airports
    Kefalonia (EFL) 10 min  ·  3.9 mi
    Dionysios Solomos (ZTH) 185 min  ·  76.6 mi
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Property information and rules
Check-in
from 15:00-23:30
Check-out
from 01:00-11:00
Guest Parking
Private parking is possible on site for free.
Internet
Wireless internet is available in the entire hotel for free.
Children & extra beds
There are no extra beds provided in a room. 
Pets
Pets are allowed on request.
Year renovated:
2006
Number of rooms:
55
Former name
thalassa (adults only)

Guest Reviews and Ratings

Feedback about Thalassa Boutique Hotel - Adults Only from previous guests about their experience.
Review score
Based on 360 verified reviews
9.2 /10
Perfect
93 %
Recommend
Breakfast
10.0/10
Cleanliness
9.4/10
Comfort
9.4/10
Facilities
9.2/10
Free WiFi
9.4/10
Location
9.0/10
Paid Wi-Fi
10.0/10
Staff
9.4/10
Value for money
8.5/10
Pros
Attentive staff service
Quality breakfast selection
Pool area aesthetics
Sea view rooms
Cons
Inconsistent room quality
Air conditioning issues
Guest reviews
based on 670 reviews
4.5/5
based on 377 reviews
9.1/10
No reviews yet on our siteUnfortunately, our guests have not yet left any reviews for this hotel, but you can read reviews from Booking.com.
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