Costa Cruises

Costa Diadema

The ship, its cabins and what’s on board, with prices for every upcoming sailing we track.

Explore rooms aboard Costa Diadema

Official category examples help you compare layouts. Fare cards show these facts only when the operator’s category matches.

Suite

Suite

Costa Diadema: Suite representative category image
Costa Diadema: Suite representative category image · Category photo

Official cabin details ↗ · Reviewed 2026-09-30. Category examples; assigned room layouts can vary.

Balcony cabin

Balcony cabin

Costa Diadema: Balcony cabin representative category image
Costa Diadema: Balcony cabin representative category image · Category photo

Official cabin details ↗ · Reviewed 2026-09-30. Category examples; assigned room layouts can vary.

Ocean view cabin

Ocean view cabin

Costa Diadema: Ocean view cabin representative category image
Costa Diadema: Ocean view cabin representative category image · Category photo

Official cabin details ↗ · Reviewed 2026-09-30. Category examples; assigned room layouts can vary.

Interior cabin

Interior cabin

Costa Diadema: Interior cabin representative category image
Costa Diadema: Interior cabin representative category image · Category photo

Official cabin details ↗ · Reviewed 2026-09-30. Category examples; assigned room layouts can vary.

Life aboard Costa Diadema

Official ship guide ↗
756 Balcony Cabins11 Swimming pools and hot tubs8 Restaurants and snack bars11 Bars and Lounges

RESTAURANTS AND BARS

Carlsberg Country Rock Club

Cost not specified

Welcome to the Carlsberg Country Rock Club, a warm and vibrant place where you can enjoy the finest selection of beers and innovative beer-based cocktails. Pair it all with delicious burgers and snacks while enjoying…

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FUN & WELLNESS

Theatre

Cost not specified

Every evening at the theatre, spectacular shows await you: musicals, comedy shows, acrobats, games and much more... there is something for everyone!

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SERVICES ON BOARD

C-Dream

Extra charge

It is the free consultation service available on board every ship to book your next cruise with the Future Cruise Consultants, who are ready to present you with the latest itinerary updates and the best offers…

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RESTAURANTS AND BARS

Teppanyaki Restaurant

Cost not specified

For a different type of experience, spend a night in an Oriental-style soft environment, where you can observe the craftsmanship of Japanese chefs.

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RESTAURANTS AND BARS

Pummid'Oro Pizzeria

Cost not specified

Pizza&mozzarella with selected ingredients and traditional cooking recipes.

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RESTAURANTS AND BARS

Gelateria Amarillo

Cost not specified

A creamy homemade ice cream or some delicious chocolate praline? No one can resist the delicacies of the Ice Cream Shop Amarillo.

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View 16 more onboard experiences

RESTAURANTS AND BARS

Aperol Spritz Bar

Cost not specified

An Aperol Spritz is an invitation to smile for the day in an atmosphere of serenity, an expression of joy on your Costa holiday.

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RESTAURANTS AND BARS

DiVino Gran Duca di Toscana

Cost not specified

The tastiest way to start the night on a Costa ship? A good glass of red or white wine from our wine shops and bars.

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RESTAURANTS AND BARS

Bollicine Bar

Cost not specified

Discover the elegance of Ferrari Trentodoc bubbles with a toast on the sea that will seduce you from the first sip

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RESTAURANTS AND BARS

Élite Suite&Club Restaurant

Cost not specified

Dinner served at the table, the menu is a la carte, and at dinner a reserved table awaits you throughout your cruise. Here you can enjoy a wide selection of dishes prepared by our chefs every day.

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FUN & WELLNESS

Casino

Cost not specified

Experience the timeless Casino classics like Roulette, Blackjack, and Poker, complemented by the latest in slot machines and electronic gaming. Exclusive to adults aged 18 and above. Remember to gamble responsibly as it

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FUN & WELLNESS

Squok Club

Cost not specified

We take care of the little ones from 3 to 11 years old, offering many fun and stimulating activities!

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FUN & WELLNESS

Squok Baby Area

Cost not specified

A completely dedicated area for family gaming moments. Children will have the opportunity to have fun with their parents in a place entirely dedicated to them.

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FUN & WELLNESS

Area Gym

Cost not specified

If you are sporty, you can keep in shape in the gym equipped with the latest equipment and large windows that overlook the sea.

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FUN & WELLNESS

Area Beauty Spa Solemio

Cost not specified

Everything you need for your beauty: hairdresser, facial masks to refresh and tone you, hair removal and manicure, to always be at your best.

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FUN & WELLNESS

Sport Area

Cost not specified

On board there are multisport fields where you can organise any team challenge: from five-a-side to volleyball, from basketball to tennis.

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FUN & WELLNESS

Outdoor Jogging Track

Cost not specified

Keep fit even on vacation! Run along the jogging path and enjoy a breathtaking sea view.

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FUN & WELLNESS

Arcade Games Room

Cost not specified

The area where everyone, both big and small, can entertain themselves with a variety of games and video games.

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SERVICES ON BOARD

Costa Shop

Cost not specified

Shopaholic? From souvenirs to big names there is something for all tastes. Choose from a thousand opportunities to make or give yourself a gift

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SERVICES ON BOARD

My Tours

Cost not specified

An area dedicated to shore excursions, where our tour experts will help organise your sightseeing to the places of interest in the ports we visit.

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SERVICES ON BOARD

My Moments Photo Store

Cost not specified

Prints, digital photos, magnets, original gadgets and many other items to make your cruise unforgettable.

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SERVICES ON BOARD

Galleria Shops

Cost not specified

You can purchase beautiful gifts on board, and everything that you may need for your cruise.

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Choosing your deck and room location

Use the official deck legend to identify connecting rooms, accessible layouts, restricted views and extra beds. Check the deck-plan version for your sailing date and where your category sits relative to lifts, public spaces and open decks.

What to budget for

Costa Cruises’s published guide · the selected fare plan can change what is included.

Generally included

  • Full-board dining

Budget for extras

  • Gratuities; amount depends on sailing and fare

Depends on your fare

  • Service charges and promotions vary by sailing

Check current inclusions and conditions ↗ · Reviewed 2026-09-30

Upcoming sailings on Costa Diadema

Showing 12 of 109All 109 sailings on Costa Diadema →

All cabin categories on Costa Diadema

Each cruise line sells cabins by category. Open a category to compare its prices across sailings.

Cabin categories on upcoming Costa Diadema sailings
CabinCategory codeSailings
Interior Cabin I1109
Interior Cabin IV18
Interior Cabin I23
Oceanview Cabin EV2
Balcony Cabin B11
Balcony Cabin B41
Sea View E11
Interior Cabin I41

IMO number: 9636888