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Estepona (Marbella area) / Spain

The Flag

An adults-only coastal retreat near Marbella, combining longevity programmes, advanced recovery technology, healthy dining and spacious suites designed for longer stays.

Outdoor pool beside green lawn with red flowering bushes, lounge chairs, and mountainous forest background under clear blue sky.
how did this hotel impress

Where adults-only calm meets modern longevity

Near Marbella in Estepona, THE FLAG Costa del Sol brings a calmer, more liveable version of longevity to the coast. Adults-only and close to the sea, it feels very laid back.

Movement is woven into the day through the gym, the Mindful Motion Studio, a 25 m sport pool and a regular programme of yoga and outdoor activities.

Recovery at THE FLAG Costa del Sol is shaped by warmth and simplicity. A sauna, Turkish bath and the outdoor saltwater pool create a calm foundation for regeneration.

The longevity angle becomes clear through the Stay Pure, Stay Balanced and Stay Strong programmes and through the hotel’s five guiding pillars: diagnostics, nutrition, movement, sleep and mental health. Advanced elements such as IHHT, cryotherapy, red light therapy, BOA compression massage and a 360° check-up add a more serious health dimension, supported by nutritional planning, lifestyle coaching and sleep-friendly details such as blackout curtains.

Breakfast is served as a buffet with a focused selection of healthy options.

Dining continues the philosophy through the restaurant, where seasonal and regional ingredients support a healthier style of Mediterranean cooking with flexible, build-your-own plates.

The result is a grown-up Costa del Sol wellbeing stay that feels calm, practical and quietly serious about longevity - especially for guests who value the option to stay longer.

Longevity essentials at a glance

Movement
Recovery
Nutrition
Modern Pilates reformer machine with wood frame and padded platform in a bright studio with wooden floor and dark textured wall.

Highlights beyond longevity

Beyond its longevity concept, the hotel also stands out for adults-only calm, spacious long-stay-ready suites and a quieter side of the Costa del Sol.
01
Adults-only calm

The adults-only setting brings more peace, privacy and a calmer rhythm to the entire stay. It creates a more relaxed atmosphere that feels quiet and restorative.

Outdoor poolside seating area with wicker chairs and tables on a wooden deck, overlooking lush green trees and hills under a blue sky with scattered clouds.
02
Long-stay-ready suites

Space is one of THE FLAG’s real strengths. Studios, suites and penthouses come with kitchens plus balconies or loggias, making the stay feel easier and more liveable - especially for guests staying longer than a standard weekend.

Wooden chair with woven seat in front of a beige floor lamp and curtains, standing on a patterned rug near a wooden side table.
03
Quiet Costa del Sol location

Set between Marbella and Estepona and close to the sea, the hotel offers a calmer base for beach walks, golf, cycling and slower coastal days away from busier strips of the coast.

Clear blue swimming pool with checkered tiles beside a wooden cabin with outdoor lounge chairs and closed umbrellas.
Sunlit sauna interior with wooden benches and folded white towels, with a glass door offering a view of mountains and buildings outside.
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A calm Costa del Sol retreat where advanced longevity tools meet adults-only wellbeing.

Facilities

THE FLAG Costa del Sol combines a well-equipped gym, structured longevity programmes and advanced tools such as cryotherapy and IHHT within a calm, health-focused setting by the sea.

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Well-equipped gym
Right
Finnish sauna and a steam bath
Right
Yoga studio
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IHHT, cryotherapy and red light therapy
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BOA compression massage and 360° check-up
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Restaurant
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25 m heated semi-Olympic sport pool with saltwater
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Freshly prepared egg dishes for breakfast
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Regular yoga, Pilates and sound healing sessions.
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Structured longevity programmes
Clear natural swimming pool with lounge chairs and a mountain backdrop under a blue sky.

Who is the perfect match for this hotel?

THE FLAG Costa del Sol is a strong match for guests who want adults-only calm with a clear focus on longevity, movement, healthy food and longer, more liveable stays by the sea. The hotel blends structured wellbeing programmes, advanced recovery tools and spacious suites in a setting that feels quieter and more grounded than a classic Costa del Sol resort.

Fitness Enthusiasts
90 %
Foodies
80 %
Relaxation Lovers
80 %

Gallery

Outdoor workout setup with a black Technogym bag, a small gray dumbbell set, a rolled white towel, and a black exercise mat on wooden decking.
Lush green garden with tall pine trees and a view of ocean and hills in the background during sunset.
Sunlit outdoor lounge area with wooden deck, cushioned sunbeds with rolled yellow towels, closed umbrellas, and green trees.
Clear blue swimming pool with tiled floor in front of a wooden house with lounge chairs and umbrellas under a sunny sky.
Outdoor seating area with striped cushions and pillows overlooking a calm blue sea under a clear sky.
Modern wooden chair with woven seat next to a tall floor lamp by a glass door with curtains and a marble wall.
Outdoor poolside seating area with wicker chairs and tables on a wooden deck, overlooking lush green trees and hills under a blue sky with scattered clouds.
Outdoor restaurant seating with set tables overlooking a blue sea and mountains under a clear sky.
In a nutshell

THE FLAG Costa del Sol is a calm adults-only wellbeing hotel near Marbella, combining longevity programmes with a strong spa-and-recovery setup, healthy dining and spacious long-stay-friendly suites. It feels less like a flashy destination retreat and more like a place where better habits can actually settle in.

Ready for the next step

Price:
Double room from 200 € per night
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Contact:
THE FLAG Costa del Sol
Calle Trajano 16
29688 Estepona/Marbella
Spain

Links:
Hotel: www.hotel.the-flag.de/en/costadelsolRestaurant: www.hotel.the-flag.de/en/costadelsol/restaurant
Modern lounge area with natural wood round coffee tables, light gray sofas, and large glass windows revealing greenery outside.
Beach
Fireplace Lobby
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