Costa Diadema, launched in 2014, 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. Now take a look at the current position of Costa Diadema.

Classic Inside

Premium Inside

Classic Outside Ocean view

Premium Outside Ocean view

Classic Ocean View Balcony

Premium Ocean View Balcony

Mini Suite with Ocean View Balcony

Suite with Ocean View Balcony

Grand Suite with Ocean View Balcony

Samsara Inside

Samsara with Ocean View Balcony

Samsara Suite with Ocean View Veranda

Samsara Grand Suite with Ocean View Veranda

Inside Guarantee

Outside Guarantee

Balcony Guarantee



Outside Single


Single Inside

Why book your Costa Diadema cruise with us?