Empty lounge chairs and closed umbrellas beside a calm pool in front of a modern white building with palm trees and greenery.
Estepona (Marbella area) / Spain

THE FLAG Costa del Sol

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

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 20 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.
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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.

Minimalist sunlit patio with two beige cushioned chairs, a small round table with a decorative bowl, and a potted tree with purple flowers.
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.

Outdoor patio area with beige cushioned lounge chairs around a small round table and glass sliding doors reflecting trees.
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
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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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20 m heated 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
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Discoverwhat sets this hotel apart

If you want a closer look, explore our posts on Instagram, capturing our experience at this hotel and follow along to discover the hotels that are redefining longevity in hospitality.
View on Instagram:
OverviewRecovery
Clear natural pond with plants and a wooden cabin in the background, snow-capped mountains under a blue sky.
Indoor beige hammock chair with cushions near large glass windows overlooking an outdoor deck with lounge chairs and a mountain landscape.
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 %

Longevity Profile

Lifestyle
Holistic
Medical

THE FLAG Costa del Sol is a programme-led longevity hotel where diagnostics, movement, nutrition, sleep, mental wellbeing and advanced recovery tools come together by the Mediterranean.

  • Structured Stay Well programmes for detox, balance and strength
  • 360° check-up, lifestyle coaching and nutritional counselling
  • Cryotherapy, IHHT, red light therapy and BOA compression
  • Well equiped Gym, yoga, pilates and a 20 m heated saltwater pool
  • Adults-only coastal setting designed for longer, health-focused stays

Gallery

Empty lounge chairs and closed umbrellas beside a calm pool in front of a modern white apartment with palm trees and greenery.
Bright modern gym with exercise bikes, weight benches, medicine balls, and strength training machines.
Indoor fitness area with wooden floor, shelves holding black exercise mats, pink exercise balls mounted on the wall, and black resistance rings hanging below.
Clear blue swimming pool with tiled floor in front of a wooden house with lounge chairs and umbrellas under a sunny sky.
Outdoor swimming pool with reflections of a modern white apartment building and beige lounge chairs under closed umbrellas.
Outdoor seating area with a round white table, gray chairs, and a yellow cushioned bench with patterned pillows surrounded by tropical plants.
Outdoor rectangular swimming pool surrounded by white lounge chairs and closed umbrellas, with palm trees and white buildings in the background under a clear blue sky.
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
Wood and fabric lounge chair with ottoman by window overlooking grassy outdoor landscape.
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