Thalassa Boutique Hotel - Adults Only | Argostoli (Kefalonia) ★ Book Spa Rooms, Wellness Deals & Guest Reviews

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Key details

About the Hotel

Lassi, Argostoli (Kefalonia), Greece, 28100

“The hotel's location is wonderfully peaceful and close to beautiful beaches.”view full review

Thalassa Boutique Hotel - Adults Only is a 4-star accommodation known for its privacy and proximity to beautiful beaches. This Argostoli (Kefalonia) hotel features two swimming pools, a fitness center, and a cocktail lounge bar, along with a focus on locally sourced dining options.

Rooms & Amenities

Thalassa Boutique Hotel - Adults Only offers 70 stylish rooms and suites designed for adult guests, each with sea or garden views. The recently renovated accommodations feature modern amenities, with many rooms offering access to shared pools and private balconies.

Dining & Leisure Options

Dining at Thalassa includes a Mediterranean breakfast made from locally sourced ingredients, served in the Eolia Pool Lounge with poolside views. The Alaia Lounge Bar offers a selection of cocktails, providing an elegant setting for evening gatherings.

Recreation & Fitness

The hotel features two freshwater swimming pools surrounded by lush gardens, ideal for relaxing or sunbathing. Additionally, a fitness center is available for guests looking to maintain their workout routine during their stay, overlooking the garden.

Location & Transportation

Thalassa Boutique Hotel - Adults Only is conveniently located 500 meters from Makris Gialos beach and offers easy access to Lassi and Argostoli. Guests can explore the nearby beaches, including Vouti beach, or utilize local bus services for transportation.

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Choose your room type

The hotel offers a variety of rooms including double rooms, family rooms, and suites with breakfast, free cancelations, and special deals

Superior Double or Twin Room

Max:

2 persons

305 sq. feet

Bed options:

1 Double bed

Sea view

Heating

Balcony

room details

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Superior Double or Twin Room Garden View

Max:

2 persons

325 sq. feet

Bed options:

1 Double bed

Garden view

Heating

Balcony

room details

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Deluxe Double Room

Max:

2 persons

305 sq. feet

Bed options:

1 Double bed

Sea view

Heating

Balcony

room details

Check Prices

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Price and Room Availability

Check availability and prices for your dates now!

Getting around

Comprehensive guide to transport options for seamless travel

City Centre

Argostoli (Kefalonia) 1.2 mi

Airports

Kefalonia (EFL) 3.9 mi

Facilities

The hotel offers amenities for your comfortable stay and unforgettable experiences

Luxurious Beautiful Room

“I stayed in a beautiful room that was beautifully decorated and offered a massive, clean, comfortable bed and a walk-in shower. Each morning, I enjoyed my balcony views overlooking the immaculate pool area and well-kept gardens, making it a perfect haven for relaxation.” view full review

Exquisite Poolside Dining

“The pool area was not only a fine place to unwind, but the Eolia restaurant served delicious meals that truly elevated my stay. Culinary delights like the cauliflower risotto and refreshing cocktails made dining here a nice experience.” view full review

Rejuvenating Massage Experience

“I indulged in a deep tissue massage at the hotel spa, heavenly. The skilled masseuse targeted all my stress points and left me feeling completely relaxed, reinforcing the overall atmosphere of tranquility during my stay.” view full review

Stylish and Spacious Bathroom

“The bathroom in my room featured a fine marble design with a huge walk-in shower that felt luxurious. It was the perfect space to unwind after a day of exploring, adding a touch of sophistication to my overall experience at the hotel.” view full review

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

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

Location

Lassi, Argostoli (Kefalonia), Greece, 28100

Map view

Lassi, Argostoli (Kefalonia), Greece, 28100

City landmarks

Beach

Makris Gialos Beach

2600 ft

Landmark

Lassi

3300 ft

Landmark

Platis Gialos Beach

4200 ft

Landmark

Casa Rossa

2500 ft

Landmark

Platys Gialos

3500 ft

Beach

Paliostafida beach

2900 ft

Landmark

Bridge De Bosset and its Monument

1.5 mi

Museum

Archaeological Museum of Argostoli

1.5 mi

Beach

Gradakia beach

4400 ft

Landmark

Argostoli Harbour

1.4 mi

Landmark

Cave-Hermitage St. Gerasimos

3200 ft

Landmark

Paralia Makris Gialos

2600 ft

Landmark

Caves

2900 ft

Museum

Italian "Divisione Acqui" War Museum

1.2 mi

Landmark

Paralia Platis Gialos

3200 ft

Landmark

Bell Square

1.3 mi

Church

Saint Spiridon Church

1.2 mi

Landmark

Korgialenio Historic and Folklore Museum

1.4 mi

Garden

Cephalonia Botanica

1.8 mi

Church

Church of Panagia Sissiotissa

1.4 mi

Mall

Lithostroto

1.4 mi

Landmark

The Bell Tower

1.3 mi

Landmark

Focas-Cosmetatos Foundation

1.5 mi

Park

Botanical garden

1.0 mi

Landmark

Sea Kayaking Kefalonia

1.0 mi

Landmark

Argostoli Lagoon

1.5 mi

Church

Catholic church of St Nicolai

1.8 mi

Landmark

Saint Eleftherios

1.2 mi

Landmark

Parko Napier

1.4 mi

Beach

Small beach

1.2 mi

Nearby

Strada del Faro di San Teodoro

Casa Rossa

1500 ft

Beach

Paliostafida beach

1100 ft

Paralia Makris Gialos

1700 ft

Restaurants

Tzogias Taverna

2400 ft

Lassi

Aqua Marina

1900 ft

not known

Zorbas Restaurant

2300 ft

Main Lassi Rd

Tanu's

2200 ft

Restaurant

Butler's House

2700 ft

Lassi Aerodromiou Argostoli

Da Veronica Bar

2400 ft

Nearby Veronica's Jewellery

Da Veronica

2600 ft

Restaurant

Taverna Sirtaki

3000 ft

Main Road

Nefeli Restaurant

3000 ft

Restaurant

Reviews and Ratings

Reviews from guests about their experience.

100%

loved their spa retreat and can’t wait to return.

10.0/10

Perfect

Rooms

7.2

Location

8.4

Service

8.6

Dining

7.2

4.5/5 based on 670 reviews

#7 of 20 hotels in Lassi based on Tripadvisor

Elijah

United Kingdom, February 2025

6.2/10

Thalassa Boutique Hotel was a beautiful getaway with stunning sea views and lovely communal areas. though my room had some issues that detracted from the experience. The staff were exceptionally friendly and attentive, which added a personal touch to my stay. While the dining options, especially breakfast, were mostly good, some meals could use improvement.

Rooms

7.0

My room was spacious and clean, providing jaw-dropping views of the sea. but the bed was not comfortable, and I noticed some maintenance issues that needed addressing.

Service

9.0

Every member of the Thalassa team was friendly and eager to assist. making a noticeable difference during my stay.

Location

8.0

The hotel is perfectly situated close to beautiful beaches and within walking distance to local tavernas. However, there was some noise from construction nearby during my visit.

Dining

7.0

Breakfast offered a great selection of delicious local items. yet some dinner options didn't impress as much as I had hoped.

Facilities

8.0

The pool area was fantastic, with plenty of sun loungers available for relaxation. but the Wi-Fi was spotty in my room.

Steven

United Kingdom, January 2025

5.2/10

I had a lovely two-night stay at Thalassa Boutique Hotel. The breakfast was truly excellent with a variety of fresh options, and I appreciated the beautiful pool area, beautifully decorated and clean. However, I faced some challenges as there was no elevator for my large suite on the first floor, which made hauling my bags a bit of a workout. Additionally, the construction nearby was a bit disruptive and blocked part of the sea view.

Rooms

7.0

My suite was large with great views, but I struggled with the stairs since there aren't any elevators. The room had a comfortable setup, though it had a musty odor at times.

Service

9.0

The staff were super friendly and attentive, making my stay more enjoyable. They helped with any of my queries promptly and were genuinely welcoming.

Location

8.0

The hotel is in a fantastic location, close to lovely beaches and a short trip into Argostoli. I could easily get to other dining options nearby, which was handy.

Dining

7.0

Breakfast was a highlight with a wide selection and friendly service. However, I found some of the dinner options repetitive and a bit pricier than expected, especially the side dishes.

Facilities

8.0

The pool area was beautiful and inviting, but the surrounding grass needed some care. I enjoyed the new pool bar and the accessible facilities, aside from the ongoing construction.

Camila

United Kingdom, January 2025

7.2/10

I had a fantastic stay at Thalassa Boutique Hotel, enjoying clean and modern rooms. the stunning sea views were a highlight. The pool area was inviting and well-furnished, plus the staff consistently provided attentive and friendly service. On the downside, the food options at the restaurant could be improved for simplicity, and the area below the hotel was under construction, which detracted a bit from the beauty of the stroll to the beach.

Rooms

8.0

I stayed in a spacious Superior Double room that offered stunning views. it felt modern and very comfortable. The only issue was that some of the lower-end rooms might not be as appealing.

Service

10.0

The staff were friendly and consistently helpful. I felt welcomed throughout my stay, making it easy to ask for assistance whenever I needed it.

Location

8.0

The hotel is ideally located. just a short walk to both a larger beach and the lively Lassi strip. However, the area below was under construction, which may affect the view during the walk.

Dining

8.0

The breakfast was impressive, filled with fresh and tasty options. but I found the restaurant menu a bit too complex and lacking simpler dishes for lunch and dinner.

Facilities

9.0

The pool area was beautifully designed with comfortable loungers. and the cocktail bar was a lovely spot to unwind with a drink, though I wish there were more accessibility options in the pools.

George

United Kingdom, December 2024

5.6/10

My stay at Thalassa Boutique Hotel was lovely, but there were a few hiccups. The stunning sea views and beautifully maintained rooms really enhanced my experience, yet some service aspects, especially at the restaurant, could improve. Overall, I enjoyed my time here, but I faced challenges that affected my stay.

Rooms

8.0

The room was modern and well-decorated, though I experienced issues with inconsistent hot water and uncomfortable pillows.

Service

6.0

While the staff was generally friendly and attentive, my experience with wait times during breakfast and drink orders fell short of expectations.

Location

9.0

The hotel is ideally located within walking distance to great beaches and local restaurants, making exploration easy and enjoyable.

Dining

7.0

Breakfast offered a wonderful variety, but some of the dinner menu items were not as appealing and could benefit from simpler options.

Facilities

8.0

The pool area was beautiful and inviting, but I noted the need for more shade options during hot days.

Joseph

United Kingdom, December 2024

6.2/10

My stay at Thalassa Boutique Hotel was a mixed experience. The pool area was fantastic, with comfortable loungers and a lovely ambiance. However, the room I initially received was not up to scratch, and the air conditioning was noisy, which impacted my comfort. Overall, the hotel's strengths in service and location were overshadowed by the room allocation issues I encountered.

Rooms

6.0

I found the room quality inconsistent; my first room was not adequate and took too long to resolve. The lack of air conditioning control was another downside.

Service

9.0

The staff, especially Mohammed at breakfast, were incredibly friendly and eager to help, which really made a difference during my stay.

Location

9.0

The hotel's location was excellent, just a short walk to the main strip and close to some nice beaches, providing a peaceful retreat.

Dining

7.0

Breakfast was enjoyable, with a good selection, though I would have liked more options for late diners.

Facilities

8.0

The pool area was well-maintained and inviting, plus the option of ordering snacks while lounging was a nice touch.