Costa Diadema, launched in 2014, is the latest addition to our fleet. It is built for relaxation and fun with lots of on-board activities, scintillating bars, gourmet restaurants and the spa area.
Among the special features not to be missed: an entire deck dedicated to children with castle and pirate galleon and the terrace on deck 5 for strolling and enjoying an aperitif at sunset: a real treat for holidaying in perfect Italian style. The cabins aboard our Flagship are elegant, well-appointed and spacious for up to five guests. At any time of the day or night you'll be spoilt for choice on what to do: sports, games, a large three-story theatre that welcomes international artists, and you too can take to the stage with Tu sì que Vales... and then the Aperol Spritz Bar for a cocktail before dancing the night away at the disco, a games room for returning to your childhood and a real German pub. We look forward to welcoming you on board.
Ship Calendar
| Destination | Oct | Nov | Dec | Jan 2027 | Mar | Mar | Apr | May | Jun | Jul | Aug | Sep |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Europe | -- | -- | -- | -- | ||||||||
| Mediterranean | -- | -- | -- | -- | -- | -- | -- | -- | -- | |||
| South America | -- | -- | -- | -- | -- | -- | ||||||
| Trans-Ocean | -- | -- | -- | -- | -- | -- | -- | -- | -- |
Ship Details
Decks
Select any deck plan to see more details. Once clicked, hover over the image to zoom.
- Interior Cabins
- Sea View Cabins
- Elevators
- Interior Cabins
- Sea View Cabins
- Sea Balcony Cabins
- Elevators
- Teatro Emerald
- Atrio Eliodoro
- Reception
- Bar Eliodoro
- Ristorante Adularia
- Atrio Fiorentino
- Ristorante Fiorentino
- Elevators
- Teatro Emerald
- Atrio Eliodoro
- Reception
- Area Foto
- Grand Bar Orlov
- Galleria Shops
- Sala Tiara
- Portobello Market
- Birreria Dresden Green
- Atrio Fiorentino
- Ristorante Fiorentino
- Elevators
- Teatro Emerald
- Atrio Eliodoro
- Gelateria Amarillo
- Sala Carte
- Country Rock Club
- Ristorante Archipelago
- Sushino at Costa
- The Lounge by Sushino
- Tavola Teppanyaki
- Terrazza Sinistra
- Steakhouse La Fiorentina
- Ristorante Club
- Pizzeria Pummid’Oro
- Casinò Golden Jubilee
- Vinoteca Gran Duca di Toscana
- Birreria Dresden Green
- Piano Bar Principe Nero
- Salone Teodora
- Bar Teodora
- Elevators
- Sea Balcony Cabins
- Interior Cabins
- Sea View Cabins
- Mini Suite with Ocean View Balcony
- Elevators
- Sea Balcony Cabins
- Interior Cabins
- Mini Suite with Ocean View Balcony
- Sea View Cabins
- Grand Suite with Ocean View Balcony
- Elevators
- Sea Balcony Cabins
- Interior Cabins
- Mini Suite with Ocean View Balcony
- Elevator
- Sea View Cabins
- Sea Balcony Cabins
- Interior Cabins
- Suite with Ocean View Balcony
- Elevator
- Atrio Eliodoro
- Lido Diana
- Ristorante Corona Blu
- Ristorante Corona Blu
- Lido Stella del Sud
- Elevators
- Sea View Cabins
- Sea Balcony Cabins
- Interior Cabins
- Balconata Diana
- Squok Club
- Peppa Pig Area
- Solarium
- Cappella
- Star Laser
- Discoteca Pietra di Luna
- Biblioteca Perla Nera
- Balconata Stella del Sud
- Bar Stella del Sud
- Elevators
- Sea Balcony Cabins
- Interior Cabins
- Suite with Ocean View Balcony
- Centro Benessere Solemio
- Elevators
- Solarium
- Peppa Pig Area
- Discoteca Pietra di Luna
- Club Allnatt
- Balconata Belle Etoile
- Sea Balcony Cabins
- Interior Cabins
- Suite with Ocean View Balcony
- Winter Garden
- Centro Benessere Solemio
- Gym
- Waterpark
- Pista da Jogging
- Campo da gioco
- Solarium
- Lido Burmese Rose
- Solarium
Ship Categories
Dining
Breakfast, lunch and dinner are 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.
Chocolate, vanilla or pistachio? No one can resist the sweet temptation of a traditional Italian ice cream.
A journey through the flavors and an unforgettable culinary experience in a one-of-a-kind restaurant with menus created by three world-renowned starred chefs Bruno Barbieri, Hélène Darroze and Ángel León.
Images are for illustration purposes only. Layout and furniture may vary.
Enjoy an exclusive experience. Join us at the Élite Suite & Club Restaurant, where our Chefs’ wonderful gourmet cuisine is made even more special by the impeccable service.
Breakfast, lunch and dinner are 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.
At the Steakhouse, the finest Italian and international meats await you, grilled to perfection. Choose from our carefully crafted menus or let yourself be tempted by our exclusive off-menu specials.
Now is the perfect time to savour a 100% Italian pizza. Try the delicious dough made with natural starter and top-quality ingredients.
Sushino at Costa is our first sushi bistro on board and is designed to bring you an authentic Japanese experience that includes nigiri, maki, sashimi. Lunch, or dinner? Sit in or takeaway? The choice is yours! Our sushi chef has created some dishes for you to savour, all prepared following ancient traditional recipes.
Images are for illustration purposes only. Layout and furniture may vary.
For a different type of experience, spend a night in an Oriental-style soft environment, where you can observe the craftsmanship of Japanese chefs.
A realm of mouthwatering hamburgers, French fries, focaccias, and desserts by Sal de Riso. Open at night: snackers take note!
Entertainment
An Aperol Spritz is an invitation to smile for the day in an atmosphere of serenity, an expression of joy on your Costa holiday.
The area where everyone, both big and small, can entertain themselves with a variety of games and video games.
Open air space where you can enjoy a fantastic view of the sea and entertain yourself with team games and table soccer.
Discover the elegance of Ferrari Trentodoc bubbles with a toast on the sea that will seduce you from the first sip
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 available.
Book and confirm your next cruise with an additional 10% discount, only €100 deposit per person, free date change, free Social Wi-Fi package, and earn double C|Club points*!
* Conditions to always check at the time of booking
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 the best of live rock music.
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 may lead to addiction.
Shopaholic? From souvenirs to big names there is something for all tastes. Choose from a thousand opportunities to make or give yourself a gift
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.
You can purchase beautiful gifts on board, and everything that you may need for your cruise.
You can find Italian taste on Costa ships every day at every appointment, in bars as well as on restaurant tables, thanks to selected products and brands.
Prints, digital photos, magnets, original gadgets and many other items to make your cruise unforgettable.
You can find Italian taste on Costa ships every day at every appointment, in bars as well as on restaurant tables, thanks to selected products and brands.
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.
At our Sunset Lounges, you can relax with your friends before or after dinner. Try a different cocktail every evening and enjoy it while admiring the sunset, always with a sea view. Please note that drinks are not included in beverage packages, except for My Drinks Plus.
In our Lounge bars you can relax and cool off with a perfect cocktail. And while the sun greets the day, you can enjoy Costa's atmosphere of serenity and pleasure.
Every evening at the theatre, spectacular shows await you: musicals, comedy shows, acrobats, games and much more... there is something for everyone!
Health & Fitness
If you are sporty, you can keep in shape in the gym equipped with the latest equipment and large windows that overlook the sea.
The pool decks are the place of fun and the meeting place par excellence, where you can make new friends while sipping a drink.
Keep fit even on vacation! Run along the jogging path and enjoy a breathtaking sea view.
The perfect place where to sunbathe, drink a cocktail and chat with your friends. There are so many solariums on board: by the pool, on the highest deck of the ship, or at the stern, to admire the wake of the ship while sailing ... Spread the towel on your sunbed and enjoy the sun!
Everything you need for your beauty: hairdresser, facial masks to refresh and tone you, hair removal and manicure, to always be at your best.
Kids & Teen
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.
We take care of the little ones from 3 to 11 years old, offering many fun and stimulating activities!
