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American Express
AC Hotel Diagonal L’Illa is a modern, boutique-scale AC Hotels property built into Barcelona’s L’Illa Diagonal shopping complex in Les Corts. It is best for business, shopping and quieter city stays, with a fitness center and AC Lounge but no pool, spa or club lounge.

Bookable with Marriott Bonvoy points. Award pricing varies by date and category, so we link straight to the official Marriott Bonvoy award chart for current rates rather than publishing a number that can go stale.
“AC Hotel Diagonal L’Illa is a modern, boutique-scale AC Hotels property built into Barcelona’s L’Illa Diagonal shopping complex in Les Corts. It is best for business, shopping and quieter city stays, with a fitness center and AC Lounge but no pool, spa or club lounge.”
AC Hotel Diagonal L’Illa is a modern, business-oriented boutique hotel set directly inside the L’Illa Diagonal shopping complex at Avinguda Diagonal 555. Its Les Corts location places guests in one of Barcelona’s quieter residential and commercial districts, with boutiques, offices, gardens and restaurants close by rather than the constant foot traffic of La Rambla or the Gothic Quarter. The hotel’s design is contemporary and urban, with a compact 103-room scale and a facade described in travel trade sources as using exposed brickwork, iron and glass. Public areas center on the AC Lounge, which functions as a combined restaurant, bar and relaxed work/social space, complemented by garden and terrace areas for outdoor seating. Amenities are practical rather than resort-style: there is an on-site fitness center, Wi-Fi, a 24-hour front desk, elevators, smoke-free interiors, parking access through the mall’s 24-hour garage for a fee, and two meeting rooms totaling about 1,368 sq ft of event space. There is no pool, no spa and no dedicated club lounge listed. For travelers who know Barcelona, the appeal is efficiency: shopping and dining are in the same complex, Camp Nou is a short drive away, and Passeig de Gràcia, Rambla de Catalunya, Casa Batlló and the historic center are reachable by taxi or transit. It suits guests who want modern rooms and strong city connections without staying in the most tourist-heavy part of town.
A contemporary room for up to two guests, typically configured with one large bed depending on availability. It is geared to short business or leisure stays, with practical work and storage features rather than destination views.
A similar contemporary room layout with two separate twin beds. This category is useful for colleagues, friends or travelers who prefer separate bedding.
A larger-capacity room category listed for families or small groups. Bedding and exact layout can vary, but it is positioned as the option for guests needing more space than a standard double or twin room.
A suite category is listed among the hotel’s accommodations, offering a step up from standard room categories. Public sources do not provide consistent exact suite dimensions or guaranteed views for this property.
Shoulder-season months offer mild, relatively dry weather around 14–21°C, fewer crowds, manageable prices, and good conditions for festivals and sightseeing without peak-summer heat.
Hot, humid conditions coincide with peak tourist season, larger crowds, higher accommodation prices, stronger award demand, and some August closures.
Co-brand cards earn Marriott Bonvoy points directly; the rest move points in from bank programs at the ratios and transfer times shown. Award pricing itself lives with the official Marriott Bonvoy tools above.

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| Hotel | Program |
|---|---|
AC Hotel Diagonal L´Illathis one | Marriott Bonvoy |
| Marriott Bonvoy | |
| Marriott Bonvoy | |
| Marriott Bonvoy | |
| World of Hyatt |
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Les Corts is a quieter residential and business district along Avinguda Diagonal, with upscale shopping, offices, gardens and restaurants nearby.
Cash rates are re-checked on a schedule; live award pricing comes straight from the program rather than a number we publish here. See methodology.