Costa Diadema

Sail along the Mediterranean exploring the wonders of the Ocean with an unforgettable cruise onboard Costa Diadema

Cruises on board the Costa Diadema

Costa Diadema is the biggest ship of Costa Crociere’s fleet with 500m of open terrace and the biggest wellness area. Costa Diadema ensures the best entertainment, activities and dining onboard for you and your family or partner. Activities onboard are never ending with ‘Star Laser’ laser maze and a laser shooting game onboard, a water spray park fun for all the family, grand prix simulator for an unforgettable driving experience and also a children play area with baby pool. For those who like to keep fit there is a jogging track and fitness center along with the ‘Samsara wellness center’ with an extensive range of treatments such as emotional shower and Zen garden.

Onboard Costa Diadema there are seven restaurants to choose from providing you with a grand selection of foods in each restaurant. Costa Diadema offers a ‘Dresden Green Brewery’ where you can taste different types of beers and chocolates. ‘Bar Teodora’ offers a typical Italian drink ‘Spritz’ served to you 20 different ways. With all this, Costa Diadema ensures you will have an unforgettable holiday onboard.


  • Ship length
    306 m
  • Passengers
  • Decks

Costa Diadema Deals

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Ship Overview

Decks and Cabins

Costa Diadema deck plan

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Costa Diadema cabins

Inside Cabin
Outside Cabin
Balcony Cabin
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Deck Location : Decks 1, 2, 6, 7, 8, & 9
Occupancy : 2
  • Bathroom with shower
  • Hair dryer
  • Desk and seat
  • Closet
  • Television
  • Telephone
  • Minibar
  • Safe
  • Air conditioning
Cabin size : 14m²

Costa Diadema cabins

Please select a cabin 

Inside Cabin

Outside Cabin

Balcony Cabin

Suite Cabin

Ship Information


On board the Costa Diadema you have the choice between an inside cabin, an outside cabin or suite with a balcony. All cabins have a high-quality, comfortable design and will leave nothing to be desired.

Food and Drink

The choices in restaurants and their menus are diverse and delicious. Try Asian cuisine in the Teppanyaki Restaurant or Italian cuisine in the La Piazza Pizzeria.


On the Costa Diadema there are many entertainment options: theatre, casino, disco, library, shopping centre, Grand Prix simulator, Star Laser, and numerous bars and lounges. There is something for all ages and interests.

Wellness and Sport

In the large and exclusively equipped spa and fitness area, no wishes are left open. This also includes a sauna area and Turkish bath. There are also 3 swimming pools, 8 whirlpools and a jogging track.

Dress Code

The dress code on the Costa Diadema is casual. So you should wear clothes in which you feel comfortable in. For the weekly Captain's dinner festive clothing is recommended.

Ship Data

  • Commissioning: 2014
  • Length: 306 m
  • Tonnage: 132,500 GRT
  • Speed: 22.5 knots
  • Number of Decks: 19
  • Passengers: 4,947
  • Crew: 1,253
  • Languages on board: English, Italian, German
  • Currency on board: Euro
  • Internet on board: Wireless Internet (surcharge) is available