Costa Diadema
“A big, modern Costa ship with a 4D cinema and a spa spread across four decks.”
Costa Diadema entered service in November 2014 and is a Dream-class ship of about 132,500 gross tons, carrying 3,724 guests at double occupancy. Her facilities include three swimming pools, a 4D cinema, the Samsara spa spread across four decks, and an outdoor promenade of more than 500 metres. From late 2026 she is scheduled to sail South American itineraries from Brazil, Argentina and Uruguay alongside Costa Serena.
A 4D cinema and a spa that spans four decks, plus an exterior promenade of over 500 metres.
What’s Onboard
Dining
- ✓Main dining rooms with Italian-style menus
- ✓Buffet restaurant
- ✓Pizzeria and casual venues
- ✓Specialty restaurants (extra charge)
- ✓Italian coffee bars and gelato
Pools & Recreation
- ✓Three swimming pools
- ✓Samsara spa across four decks
- ✓Outdoor promenade over 500 metres
- ✓Fitness center
- ✓Sports areas
- ✓Sun decks
Entertainment
- ✓Main theatre with shows
- ✓4D cinema
- ✓Casino
- ✓Live music venues and bars
- ✓Discos
- ✓Cabaret and comedy
Cabins
- ✓About 1,862 cabins
- ✓Inside, Oceanview, Balcony and Suite categories
- ✓Samsara suites with spa access
- ✓Family and connecting staterooms
- ✓Accessible staterooms
Family & Kids
- ✓Squok Club kids' clubs and teen programs
- ✓Family-friendly pools
- ✓Family staterooms and connecting cabins
- ✓Kids' menus and family activities
Video Tour
Costa Diadema — Full Ship Tour Walkthrough (4K)
- ✦South American cruisers (from late 2026)
- ✦Travelers who like Costa's Italian atmosphere
- ✦Families wanting a large, modern ship
- ✦Spa lovers
Travelers wanting a small-ship or quiet experience — Diadema is a big, lively ship with a very international mix of guests.
7-night sailings from roughly $600–$1,300 pp (inside)