Diadema
Deck 1

Costa Diadema Deck 1

Deck 1 of Costa Diadema features 4 different cabin categories with a total of 248 staterooms. The deck below contains public areas, which may result in noise from below. This interactive deck plan allows you to explore each cabin's location, size, and category. Click on any cabin in the deck plan below to view detailed information about that specific stateroom.

In This Guide

Deck Layout & Details

Deck 1 Overview

Outside Cabins

155 cabins on this deck

EC6 cabins - Sea View
EP149 cabins - Sea View

Cabins with windows or portholes providing natural light and ocean views, offering a connection to the sea.

Inside Cabins

93 cabins on this deck

CI6 cabins - Interior Classic Single
IC87 cabins - Interior Classic

Interior cabins without windows, typically the most affordable option while still providing comfortable accommodations.

Cabin Size Extremes

Sizes compare with all measured cabins in the same broad class on this ship. Royal Caribbean, Celebrity, Carnival and Viking comparisons use deck-plan footprints; Princess uses reported square footage. Cabins without measurements are excluded.

Largest Cabins by Category

Outside

Cabin 1448

Category EC

+8%

vs. ship class average

Inside

Cabin 1218

Category IC

+28%

vs. ship class average

Smallest Cabins by Category

Outside

Cabin 1219

Category EC

-8%

below ship class average

Inside

Cabin 1415

Category IC

-8%

below ship class average

Interactive Deck Plan

Click any cabin to view details. Scroll the plan to explore — the bow is at the top.

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Cabins on Deck 1

EC · Sea View · 6 cabins

EP · Sea View · 149 cabins

CI · Interior Classic Single · 6 cabins

IC · Interior Classic · 87 cabins

Cruises on Costa Diadema

6 Night Savona to Lisbon cruise
November 2, 2026
Costa Diadema
S M L XL
Savona → Barcelona → Malaga → Cadiz → Lisbon
$531
$89 per day
Balcony
LOWEST PRICE EVER
2 Night Barcelona to Savona cruise
October 31, 2026
Costa Diadema
S M L XL
Barcelona → Marseille → Savona
$148
$74 per day
Inside
LOWEST PRICE EVER
3 Night Marseille to Barcelona cruise
October 28, 2026
Costa Diadema
S M L XL
Marseille → Savona → Barcelona
$228
$76 per day
Inside
LOWEST PRICE EVER
2 Night Savona to Barcelona cruise
October 29, 2026
Costa Diadema
S M L XL
Savona → Barcelona
$163
$82 per day
Inside
9 Night Savona to Tenerife cruise
November 2, 2026
Costa Diadema
S M L XL
Savona → Barcelona → Malaga → Cadiz → Lisbon → Las Palmas → Tenerife
$740
$82 per day
Inside
LOWEST PRICE EVER
11 Night Tenerife to Rio de Janeiro cruise
November 11, 2026
Costa Diadema
S M L XL
Tenerife → Mindelo → Maceió → Salvador → Rio de Janeiro
$882
$80 per day
Inside
4 Night Savona to Savona cruise
October 29, 2026
Costa Diadema
S M L XL
Savona → Barcelona → Marseille → Savona
$410
$103 per day
Inside
21 Night Marseille to Rio de Janeiro cruise
November 1, 2026
Costa Diadema
S M L XL
Marseille → Savona → Barcelona → Malaga → Cadiz → Lisbon → Las Palmas → Tenerife → Mindelo → Maceió → Salvador → Rio de Janeiro
$1,843
$88 per day
Inside
20 Night Savona to Rio de Janeiro cruise
November 2, 2026
Costa Diadema
S M L XL
Savona → Barcelona → Malaga → Cadiz → Lisbon → Las Palmas → Tenerife → Mindelo → Maceió → Salvador → Rio de Janeiro
$1,777
$89 per day
Inside
24 Night Marseille to Itajai cruise
November 1, 2026
Costa Diadema
S M L XL
Marseille → Savona → Barcelona → Malaga → Cadiz → Lisbon → Las Palmas → Tenerife → Mindelo → Maceió → Salvador → Rio de Janeiro → Sao Paulo → Itajai
$2,147
$89 per day
Inside
View All Costa Diadema Cruises

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