Hotel SB Diagonal Zero
Barcelona at eye level, with a rooftop pool to prove it.
A place to stay in Barcelona
Hotel SB Diagonal Zero 4 Sup is a four-star hotel in Barcelona with a rooftop outdoor pool, a spa and wellness centre, a fitness centre, and an on-site restaurant and bar. Private parking is available on-site, which is rare enough in this city to matter. Rooms run from 26 m² doubles to a 70 m² Deluxe Suite with a king bed, sofa bed, and spa bath. Most look out over the city; several carry sea views. With over 7,000 guest ratings averaging 4.1/5, the most consistent praise goes to cleanliness, comfort, and staff.
Who this stay suits
A well-equipped four-star hotel in Barcelona with a rooftop pool, working spa, and on-site parking — practical without being bare-bones.
Best for
- Couples wanting sea-view rooms
- Business travellers needing meeting facilities
- Families using triple rooms
- Drivers who need hotel parking
Less suited to
- Travellers on a tight budget
- Those wanting a central, walkable old-town location
Rooftop pool with city views
The outdoor pool sits at rooftop level, with sightlines across Barcelona. A sun deck with outdoor furniture surrounds it. It is accessible from every room category, and select rooms also look directly down onto the pool from their windows.
Spa, hot tub, and fitness
The spa and wellness centre includes a hot tub alongside treatment facilities. The fitness centre runs separately. Two room categories — Double Room with Spa Access and Superior Double Room with Sea View and Spa Access — include spa entry as part of the rate.
Sea-view rooms and suites
Three categories face the sea: the 28 m² Superior rooms with sea and city views, and the 70 m² Deluxe Suite, which adds a king bed, sofa bed, and spa bath. The Suite with Hot Tub at 35 m² has a private spa tub and city views.
Restaurant, bar, and breakfast
The hotel runs a restaurant and bar on-site, with room service also available. Breakfast is rated 'Very Good' — a specific designation, not editorial padding — and can be added to most room rates at booking.
Rooms & suites
Double or Twin Room
26.0 m² · Select your bed (if available) 1 queen bed 2 twin beds
- 1 room
- City view
- Pool with a view
- Rooftop pool
- Air conditioning
Double Room
26.0 m² · Select your bed (if available) 1 queen bed 2 twin beds
- 1 room
- City view
- Pool with a view
- Rooftop pool
- Air conditioning
Superior Double or Twin Room with Sea View
28.0 m² · Select your bed (if available) 1 queen bed 2 twin beds
- 1 room
- Sea view
- City view
- Pool with a view
- Rooftop pool
Triple Room
28.0 m² · Select your bed (if available) 1 twin bed and 1 queen bed 3 twin beds
- 1 room
- City view
- Pool with a view
- Rooftop pool
- Air conditioning
Double Room with Spa Access
26.0 m² · Select your bed (if available) 1 queen bed 2 twin beds
- 1 room
- City view
- Pool with a view
- Rooftop pool
- Air conditioning
Superior Double Room with Sea View and Spa access
28.0 m² · Select your bed (if available) 1 queen bed 2 twin beds
- 1 room
- Sea view
- City view
- Pool with a view
- Rooftop pool
Suite with Hot Tub
35.0 m² · 1 queen bed
- Private suite
- City view
- Pool with a view
- Rooftop pool
- Air conditioning
Deluxe Suite with Spa Bath
70.0 m² · Bedroom 1: 1 king bed Living room: 1 sofa bed
- Private suite
- Sea view
- City view
- Pool with a view
- Rooftop pool
Standout features
Inside Hotel SB Diagonal Zero 4 Sup
Amenities at Hotel SB Diagonal Zero 4 Sup
Most popular facilities
- Outdoor swimming pool
- Non-smoking rooms
- Facilities for disabled guests
- Free Wifi
- Restaurant
- Private Parking
- Room service
- Family rooms
Great for your stay
- Restaurant
- Parking
- Private bathroom
- Air conditioning
- Spa and wellness center
- View
- Free Wifi
- Flat-screen TV
Bathroom
- Toilet paper
- Towels
- Bidet
- Bath or shower
- Private bathroom
- Toilet
- Free toiletries
- Hairdryer
Bedroom
- Linens
- Wardrobe or closet
View
- City view
- View
Outdoors
- Outdoor furniture
- Sun deck
- Terrace
- Garden
Across more than 7,200 ratings, the hotel scores 4.1/5. Cleanliness, comfort, and staff are the three themes guests return to most consistently in their feedback. The rooftop pool and on-site parking are practical draws that come up frequently as reasons to choose this property over comparable options in Barcelona.
- Staff8.6
- Facilities8.4
- Cleanliness8.7
- Comfort8.7
- Value For Money8
- Location8.5
- Free Wifi8.2
Good to know
Frequently asked
Where exactly is the hotel in Barcelona?
The hotel is in Barcelona, Spain. The name references the Diagonal, one of the city's main arterial roads. For precise neighbourhood and address, check the hotel's own booking page or map listing.
Is there parking at the hotel?
Yes. The hotel has private on-site parking, which is available for guests. Private parking in Barcelona is not common at city hotels, so this is worth factoring in if you are arriving by car.
What room types are available?
Eight categories in total: Double or Twin, Double, Superior with Sea View, Triple, Double with Spa Access, Superior Sea View with Spa Access, Suite with Hot Tub, and Deluxe Suite with Spa Bath. Sizes range from 26 m² to 70 m².
Do any rooms include spa access?
Two room categories include spa access as part of the rate: the Double Room with Spa Access (from €224) and the Superior Double Room with Sea View and Spa Access (from €240). Other room types do not include it automatically.
Is there a swimming pool?
Yes, an outdoor pool at rooftop level with a sun deck and city views. It is accessible to all guests. Several rooms have direct views of the pool.
Is breakfast included?
Breakfast is available and rated 'Very Good'. Whether it is included depends on your chosen rate — check at the time of booking, as some rates include it and others do not.
Is the hotel suitable for families?
The hotel lists family rooms among its facilities. The Triple Room at 28 m² sleeps three. There are also facilities for disabled guests, and free Wi-Fi throughout.
What are the check-in and check-out times?
Specific check-in and check-out times are not listed in the facts provided here. Contact the hotel directly or check your booking confirmation for the exact times that apply to your stay.
Is there a restaurant and bar on-site?
Yes. The hotel has both a restaurant and a bar, plus room service. Breakfast, lunch, and evening meals can all be handled without leaving the property.
Does the hotel have a spa and fitness centre?
Yes to both. The spa and wellness centre includes a hot tub. The fitness centre operates separately. Spa access is included in two specific room categories; it may be available at an additional charge for other room types — confirm with the hotel.
Is Wi-Fi free?
Yes, free Wi-Fi is available throughout the hotel. Business and meeting facilities are also on-site for guests travelling for work.
What is the price range?
Rooms start from €169 per night for a standard Double or Twin. The Deluxe Suite with Spa Bath is the highest category, from €420 per night. Rates vary by date and availability.