Diagonal Mar Barcelona, Spain
Renovated
2026
Price
$$$$
Rated for
Design Social WellnessOutside the door
The house
SLSMaximalist marina flagship
Neon-lit arrival corridors and playful maximalist design bring lively pool energy directly to the edge of the Port Fòrum marina.
“The design and staff exude an unrestrained luxury, the views of the Mediterranean provide a constant and wonderful backdrop…”
What it’s good at
Remarkable
Undulating wave architecture by Fermín Vázquez frames theatrical, maximalist interiors featuring neon tunnels and mirrored minibars.
Remarkable
Six lively venues encompass the Cósmico rooftop pool club, cocktail lab Kyara, and energetic weekend DJ sessions.
Notable
A subterranean cenote pool with rain-effect waterfalls complements the Starpool thermal suite and Edan Studios movement classes.
What they say
Michelin Selected
Michelin
Also in Condé Nast Traveler.
Inside, it is maximalist in the best way: bold lines, glossy textures, and a flirtatious energy that runs through it all.
Somewhere quiet
Away from the crowds. Getting around takes intention.
Moored at Port Fòrum beside Parc del Fòrum, the hotel sits steps from quiet local sands and a quick tram ride into central Barcelona.
The rooms
Every room opens onto a private balcony overlooking the water, framed by oversized headboards, mirrored cocktail bars, and bright marble bathrooms.
The pools
Bring a swimsuit.
A subterranean pool sits beside a cascading water curtain. Upstairs, the main infinity pool looks over Port Fòrum marina.
The spa
Treatment rooms feature soaking tubs and marble vanities for clinical skincare rituals developed with Barcelona-based SEPAI.
Thermal suite and gym
A Starpool thermal suite centers on a circular stone plinth, and the 24-hour gym provides Matrix strength equipment.
Dogs stay too.
At the table
Kyara shakes fragrance-inspired cocktails under an amber canopy, and Lora serves coastal Mediterranean plates from a wood-fired oven.
How it began

Opened in 2025 as the brand's European debut, the property makes a bold statement behind an undulating, wave-inspired Mediterranean facade.
Good to know
Stay here
SLS Barcelona
Choose your dates to see every room and rate, and book in a few steps.
Add dates to see the price for your stay.
Or book with
Booking.com ExpediaWe may earn a commission when you book through Booking.com or Expedia. It never decides which hotels we include or how we rate them.
The app
Like this one? There are so many more.
Swipe any city’s hotels and heart the ones you love. The app gets your taste.
Our shorthand
How we rate hotels.
The medals
Gold
Extremely rare. Sets the global standard.
Silver
Brilliant execution. And we’re picky.
Bronze
They did this well. You’ll notice.
Listed
A defining trait. Makes the hotel what it is.
The eight vibes
Design
Built around a vision. Even the door handles have a designer.
Luxe
Cared for at every turn. The bath is drawn before you ask.
Local
It could only be here. You wake up knowing where you are.
Social
Where the city goes out. The bar is full and the night is young.
Heritage
A building with a story. Once a palace, a monastery, a station.
Wellness
You leave feeling new. Rest, sweat, soak and sleep like a stone.
Classic
The city grew up with it. Same rituals, same regulars, same bar.
Resort
A world of its own. Something to do from breakfast to nightcap.
The scene
Lively
Where things happen: restaurants, shops, people.
Central
Well-located: walkable to some things, a short ride to more.
Quiet
Away from the crowds. Getting around takes intention.
Secluded
A place apart: the property is the destination.