The One Barcelona

The One Barcelona is a modern 5-star Gran Lujo a block off Passeig de Gracia, part of H10 Hotels and Preferred Hotels & Resorts. Around 89 rooms pair contemporary style with Despacio Spa, a rooftop plunge pool, and the Mood Rooftop Bar. Best for central Eixample luxury near La Pedrera and Casa Batllo.

"A modern H10 Gran Lujo a block off Passeig de Gracia, with the Despacio Spa, a rooftop plunge pool and the Mood rooftop bar."

Aggregate 9.3/10 on our editorial scale (Room & Design, Service, Location). Independently scored; see our methodology. This is our opinion, not an aggregate of user reviews.

Affiliate disclosure: we may earn a commission from bookings at no cost to you. We never accept payment for placement. Facts verified against official sources and the 2026 Michelin Guide in July 2026.

What makes The One Barcelona special?

The One delivers contemporary Gran Lujo luxury on a quiet Eixample side street a block off Passeig de Gracia. As a 5-star property within H10 Hotels and a member of Preferred Hotels & Resorts, it takes a modern, design-led approach rather than the historic styling of Barcelona's older grand hotels. Around 89 rooms and suites keep the scale intimate, topped by a Penthouse Suite with a private terrace. The location is a core selling point: guests sit within walking distance of both La Pedrera and Casa Batllo while staying just off the main boulevard's bustle. Dining runs through Somni Restaurant & Cocteleria, a Mediterranean kitchen serving a seasonal a la carte menu plus a gourmet breakfast, and the Mood Rooftop Bar, which offers panoramic cocktails and light plates. Wellness is a genuine feature here, with the Despacio Spa at The One and a top-floor plunge pool and solarium reserved for guests alongside the rooftop bar. The result is a compact, contemporary base for shopping, Gaudi sights, and a rooftop drink, aimed at travelers who prefer modern polish to old-world grandeur.

Which room should you book?

The One keeps its room count intimate at around 89, spanning rooms and suites up to a Penthouse Suite with a private terrace. The style is contemporary and design-led, matching the hotel's modern Gran Lujo positioning rather than a classic look. The Penthouse Suite is the standout, adding a private outdoor terrace on top of interior space. Because the hotel sits on a compact Eixample side street, the key booking decision is orientation and floor: quiet versus street noise is room-dependent, so guests who want calm should request a higher floor or an interior-facing room. Higher rooms also improve the Eixample skyline outlook. The smaller overall scale means a more personal feel than the city's larger 5-stars, with fewer rooms sharing the spa and rooftop. For couples and design-minded travelers who value a modern, central room over sheer size or a historic setting, the accommodations fit well, and choosing the right room within the building matters more here than the category alone.

Where should you eat and drink?

Dining at The One runs through two venues that cover different moods. Somni Restaurant & Cocteleria is the main kitchen, serving Mediterranean cooking from a seasonal a la carte menu and also handling a gourmet breakfast, with a cocktail element built in. It does not hold a Michelin star, so it functions as a capable hotel restaurant rather than a fine-dining destination. Up top, the Mood Rooftop Bar delivers panoramic cocktails and light plates, pairing drinks with Eixample skyline views and sitting alongside the guest plunge pool and solarium. The two together let guests start with a gourmet breakfast, return for a Mediterranean dinner, and finish with a rooftop cocktail without leaving the building. The rooftop's light plates suit a casual meal or an aperitif rather than a full dinner, so travelers wanting a substantial evening meal will lean on Somni. For a central hotel with strong dining nearby on and around Passeig de Gracia, the on-site pair is a convenient anchor.

What is the spa and pool like?

Wellness is a real strength at The One, built around a spa and a rooftop water feature. The Despacio Spa at The One provides the treatment side, giving guests a dedicated place to unwind indoors. On the top floor, a plunge pool and solarium are reserved exclusively for guests and sit alongside the Mood Rooftop Bar, so a dip, a sunbathe, and a cocktail all share the same level with skyline views. Guests should set expectations on the pool: it is a small plunge pool and solarium rather than a full swimming pool, so it suits cooling off and relaxing rather than doing laps. In warm months the rooftop combination of water, sun, and bar is a highlight, and having it exclusive to guests keeps it calmer than a public rooftop. For travelers who want both spa treatments and a rooftop dip in a central location, The One covers both.

Where is The One Barcelona, and how do you get there?

The One sits at Carrer de Provenca 277 in the Eixample, one block off Passeig de Gracia, which puts it in the center of Barcelona's shopping and Gaudi district while keeping it off the busiest stretch of boulevard. Passeig de Gracia itself is about one block away, a 2 to 3 minute walk, and both Casa Batllo and La Pedrera are roughly a 5-minute walk, so two of Gaudi's landmark buildings are close on foot. Placa de Catalunya and the top of Las Ramblas are about a 10-minute walk, linking the hotel to the old town and the main transport hub. The side-street setting is a genuine advantage, offering a slightly calmer position than a hotel directly on the boulevard while keeping everything within easy reach. The compact street does mean noise varies by room, so orientation matters. For a central Eixample base focused on shopping, Gaudi sights, and walkable access to the rest of the city, the location works well.

What do guests consistently say?

Guests value The One for its combination of a central location, a contemporary feel, and genuine rooftop and spa facilities. The position a block off Passeig de Gracia, within walking distance of La Pedrera and Casa Batllo, draws travelers who want to be central without sitting on the busiest part of the boulevard. The Despacio Spa, the guest-only rooftop plunge pool and solarium, and the Mood Rooftop Bar are frequent highlights, especially in warm weather. The most useful caveats are practical. The rooftop water feature is a small plunge pool rather than a full swimming pool, so guests expecting a proper pool should adjust expectations. Because the hotel sits on a compact side street, quiet varies by room, and the common advice is to request a higher or interior room for calm. For couples and design-minded travelers who prioritize a modern, central base with a spa and rooftop, the hotel tends to satisfy, provided the pool and room-noise points are understood in advance.

Honest cons: who should skip it?

The One's drawbacks are modest but worth knowing before booking. The rooftop water feature is a small plunge pool and solarium rather than a full swimming pool, so travelers hoping to swim laps or spend a long time in the water will find it limited. The hotel occupies a compact Eixample side street, which means quiet versus street noise is room-dependent, so the safest approach is to request a higher floor or an interior room to avoid disturbance. The intimate scale of around 89 rooms delivers a personal feel but also fewer facilities than a large resort-style property. At a low-season rate starting around 300 to 400 euros, it also sits at the higher end for the category, so value depends on making full use of the spa and rooftop. None of these undermine the core appeal of a modern, central, amenity-rich base, but they shape who the hotel suits best.