0861 100 400

  1. Mon to Fri 9am 7pm
  2. Sat 9am 4pm
  3. Sun 10am 4pm

Costa Diadema

The fleet's new flagship, Diadema has a name that says it all. Diadema is Italian for tiara. From October 2014 this new addition offers passengers the most complete, innovative and surprising experiences you could have on a cruise. There’s plenty on board to explore in this brightest jewel in the Costa fleet. From fabulous food, with flavours from around the world, to the most spectacular Samsara Spa – the fleet’s best. New features include split-level rooms overlooking the sea and an outdoor promenade to 'connect' passengers more closely with the sea. Perfect for those who are looking for a new cruise adventure on a ship that cannot fail to impress.

Costa Diadema visits the following regions


  • Entered service 01/11/2013
  • Tonnage 132,500
  • Number of Decks 14
  • Passenger Capacity 4,947
  • Total Crew 1,253
  • Number of Cabins 1,854
  • Wheelchair Accessible Cabins Yes
  • Number of Pools 2
  • Number of Restaurants 6
  • Formal Nights Yes
  • Kids Club Yes


Expect the Diadema to really come to life in the evenings, with a sumptuous three-storey theatre set to deliver lavish productions, and plenty of bars and lounges to suit all tastes and moods.

Entertainment includes

  • Two-storey games area with Laser Games
  • Emerald Theatre
  • 4D cinema and three-storey theatre
  • Golden Jubilee Casino
  • Pietra di Luna Disco
  • Giant poolside screen
  • Live entertainment at the Country Rock Club


Costa Diadema offers new dining experiences with an array of restaurants and bars offering high quality food from Italy and around the world.

Selected restaurants may require reservations and may carry an additional charge.

Dining includes

  • Fiorentino Restaurant
  • Adularia Restaurant
  • Corona Blu Buffet Restaurant
  • Pizzeria
  • Tavola Teppanyaki Restaurant
  • Samsara Restaurant
  • Club Diadema (à la carte Club Restaurant)

Bars & Lounges

The Diadem has a fabulous range of bars and lounges to suit all tastes. Perhaps its most impressive is the Teodora Bar and Lounge which opens out onto a square overlooking the sea where you can dance to Latin rhythms and sip cocktails as you watch the world drift by.

Bars & Lounges includes

  • Diadema Club
  • Country Rock Club
  • Orlov Grand Bar
  • Eliodoro Bar
  • Bollicine Bar
  • La Piazza Bar & Lounge
  • Stella del Sud Lido Bar
  • Diana Lido Bar
  • Principe Nero Piano Bar
  • Dresden Green Pub
  • Gran Duca di Toscana Wine Bar
  • Cognac & Cigars Lounge
  • Teodora Lounge and Bar

Leisure & Activities

There are a number of firsts on offer on Costa’s flagship Diadema: interactive laser games and a Laser Maze, plus the Portobello Market Piazza with designer stores and retail outlets. The new ship also sees a return of the highly-regarded, three-level Samsara Spa with an exclusive outdoor area where passengers can enjoy their holiday in an atmosphere of total wellness and relaxation.

Leisure & Activities includes

  • Portobello Market Square shopping area filled with chic boutiques
  • Samsara Spa on four levels with gym, spa, solarium, thalassotherapy pool, treatment, steam and sauna rooms
  • Eight hot tubs
  • Three pools, including one with a retractable glass roof and giant screen
  • Multi-sports pitch and outdoor jogging track
  • Grand Prix Simulator

Kids & Teens

A huge kids club, in the shape of a castle, is one of the highlights for kids on the Costa Diadema! Aside from that, they’ll be kept busy with fun games and activities in the Squok club, run by experienced children’s entertainers.

Kids & Teens includes

  • A royally sized castle-shaped kids club
  • Squok Club
  • Baby pool


Inside cabin

Adjustable air-conditioning / twin beds, many converting to a queen-size bed / private bathroom with shower / satellite TV / telephone / mini-bar / hair dryer and safe.

Outside cabin

Adjustable air-conditioning / picture window or porthole / twin beds, many converting to a queen-size bed / private bathroom with shower / satellite TV / telephone / mini-bar / hair dryer and safe.
Premium cabins include: free continental breakfast served in the cabin / free 24-hour room service / dinner reservation in the restaurant. Samsara cabins have direct access to the Spa.

Balcony cabin

Adjustable air-conditioning / balcony / twin beds, many converting to a queen-size bed / private bathroom with shower / satellite TV / telephone / mini-bar / hair dryer and safe.

Mini-Suite / Suites cabin

Adjustable air-conditioning / furnished balcony / sitting area / queen-size bed and extra pull-down bed / choice of pillow / private bathroom with shower / Jacuzzi with towelling bathrobe and slippers (except Mini-suite) / selection of bath products / satellite TV / telephone / mini-bar / hair dryer / safe / V.I.P. check-in / fresh flowers / fruit daily / option of in-suite dining room meals / preferred seating in the main dining rooms / butler service / invitation for an exclusive cocktail with the Captain.
Samsara suite: direct access to the Spa/ welcome including Tea Ceremony / personalised wellness programme advice / two treatments / two fitness or meditation lessons / two entries to the UVA Solarium / reserved table in the Samsara Restaurant. Some also have: purifying shower filter /aromatic essence diffuser / a selection of ayurvedic teas.
*Speak to your Imagine Cruising adviser for more information about the exact specification of each suite.

Ship Deck Plans

Deck Plan


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