Hotel SB Diagonal Zero 4 Sup

Hotel SB Diagonal Zero 4 Sup gives you a practical Barcelona base with a rooftop pool, a proper fitness room and enough food on site to avoid turning every evening into a logistical exercise. The setting is modern and city-facing rather than coastal-resort quiet, which suits you if you want diving days with Barcelona’s museums, architecture and restaurants within reach.

English, Spanish and French are spoken by the hotel team, so you can deal with the useful things in the language that suits you. The hotel’s website is also available in German, French, English and Spanish. That matters when you are sorting out an early start, a late return or a room request with damp hair and very little patience left.

The building has 236 rooms and combines business-hotel practicality with leisure facilities. Soundproofing, air conditioning, free Wi-Fi and a 24-hour room-service option make the return from a long day fairly straightforward: shower, eat, sleep, repeat.

You are in Barcelona, Spain, on Avenida Diagonal in the city’s business district. The International Convention Centre and Barcelona’s Forum Auditorium are opposite the hotel, while the wider city is easy to reach without making transport your main hobby.

El Maresme | Fòrum metro station is about 300 metres away, roughly a three-minute walk. From there, the city centre is around five minutes by metro. Sant Adrià de Besòs railway station is about 1.5 miles away on foot, giving you another rail connection when the metro is not the right tool for the job.

The sea is close enough for a proper change of scenery but not directly outside the entrance. Llevant Beach is about 0.7 miles away, around a 15-minute walk, with golden sand, sun loungers and parasols. Nova Mar Bella Beach and Forum Beach are also within roughly 0.7 to 0.8 miles on foot. For Barcelona’s better-known sights, the Arc de Triomf is about 2.7 miles away on foot, the Picasso Museum about 3 miles, and Plaça de Catalunya about 3.4 miles.

For a straightforward diving stay, the standard double or twin rooms keep things simple: a large bed or twin beds, air conditioning, soundproofing and a laptop safe. You also have a kettle with tea and coffee-making facilities, ironing equipment, a flat-screen satellite TV and free Wi-Fi. The touch-screen controls for lighting and temperature are useful when you want the room dark, cool and ready for sleep rather than a small technology demonstration.

If the view matters, the superior rooms look towards the sea. They are the sensible choice for a couple who would rather wake up to a wider outlook than spend the extra time in the city centre. The rooms with spa access suit you when the main plan is dive, eat, soak and do very little else. For a more generous couple’s stay, the suites with a hot tub or spa bath give you a separate reason to return to the room before Barcelona’s nightlife gets any ideas.

Family rooms are available, and children of any age are welcome. A cot can be requested for a baby, while extra beds are not available, so check the sleeping arrangement carefully if you are travelling with children. Private bathrooms include a bath or shower, hairdryer and toiletries; bathrobes and slippers can be provided on request. Daily housekeeping keeps the practical side of the stay moving, and a wardrobe gives you somewhere to put the clothes that have survived the day better than you have.

Breakfast is a continental buffet and is included in the hotel’s breakfast formula. Índigo Restaurant takes care of breakfast, lunch and dinner in an air-conditioned interior, with international cooking and a smart-casual dress code. Its listed service periods run from 07:00 to 10:30, 13:00 to 15:00 and 19:00 to 23:00, giving you a usable evening window rather than requiring a heroic sprint back from the coast.

The Hall offers a different setting: Mediterranean food on a terrace, with lunch from 12:00 to 16:00 and dinner from 19:00 to 23:00. The dress code is casual, which is welcome when the day has involved salt, sun and the slow realisation that your shoes are still damp.

There is one hotel bar, the Hall Bar, a lobby bar focused on cocktails. A snack bar, coffee house and minibar add smaller options, while room service runs around the clock. Breakfast can also be taken in your room. Special diet menus are available on request, and packed lunches are available when a full sit-down meal does not fit the day.

The rooftop is the hotel’s main answer to the question of what to do when you are not underwater, at the table or holding a drink. Its outdoor pool is seasonal, panoramic and reserved for adults, with views across Barcelona. Sun loungers and pool towels are available, so you can make the afternoon as active as a slow turn from one side to the other.

The wellness facilities give you more options when your legs have had enough of the city. The spa includes a Turkish bath and Finnish sauna, while hot-tub access, massages and beauty treatments are available. Spa use is for guests aged 11 and over, so this is more useful for adult downtime than for keeping very young children occupied.

The fitness centre is free to use and fully equipped. If you still have movement left in you, bicycle hire is available, and the hotel can arrange car hire and cultural excursions. The beach is close enough for a walk and a change of scenery, while the metro puts Barcelona’s museums and architecture within easy reach. The Picasso Museum, Arc de Triomf, La Pedrera and Casa Batlló all sit within the wider city itinerary.

Barcelona El Prat Airport is about 10 miles away by road, with a drive of around 20 minutes. Girona-Costa Brava Airport is considerably farther, at about 54 miles by road. An airport transfer is available on request, and car hire is also offered. If you drive, private parking is available in the hotel’s garage; the parking service is paid, so confirm the current arrangement when you book.

Check-in runs from 15:00 to midnight, and you need photo identification and a credit card at arrival. Check-out is available from 04:00 until 12:00, which gives you a useful departure window for an early flight. Express check-in and check-out, a 24-hour reception, luggage storage and a tour desk all help when your travel timings refuse to behave.

Wi-Fi is free throughout the hotel. Laundry, dry cleaning and ironing services are available, as are a safety deposit box, business facilities and six meeting rooms. Upper floors are reached by lift, and facilities for disabled guests are available. The hotel accepts cash, Visa, Mastercard and American Express. Parties and events are not permitted, and pets are not allowed.