InsideHarmony of the Seas · Cabin category CI

Harmony of the Seas CI Inside Cabins

Cabin category CI is a standard-size inside cabin on Harmony of the Seas: 68 CI cabins on decks 3, 6, 7, 8, 9, 10 and 11, each 172 sq ft.

68cabins

172 sq ftinterior

Up to 2guests

3, 6, 7, 8, 9, 10 & 11decks

See inside faresInside cabins on Harmony of the Seas from $70 pp/night. We price by cabin type, not by category. Fares as of Oct 9, 2026.

Harmony of the Seas Connecting Interior (CI) cabin, photo 1 of 2

// 01 · Floor plan

Harmony of the Seas CI inside floor plan

Harmony of the Seas Connecting Interior (CI) floor plan

Interior172 sq ft

Total172 sq ft

Sleeps: Up to 2 guests
Beds: One Royal King bed (can convert into two twin-size beds)
Bathroom: One bathroom
Living space: Room with bed, vanity and sitting area with sofa

CI's total size vs every category on the shipInterior plus balcony, from the smallest category to the largest.

CI172 sq ft

96 sq ft2N · smallest

2,367 sq ftRL · largest

// 02 · Compare

How Harmony of the Seas CI cabins compare

Harmony of the Seas CI inside cabins are standard size: the same 172 sq ft as 3 other inside categories; 100% of its cabins connect to a neighbor.

CI: 172 sq ft · tied #4 with 3 others of 7 inside categories

Inside avg · 192 sq ftShip avg · 358 sq ft

1RSpacious Interior260 sq ft 2SCentral Park View Interior199 sq ft 2TPromenade View Interior194 sq ft CIConnecting Interior172 sq ft 4VInterior172 sq ft 3VInterior172 sq ft 4UInterior with Virtual Balcony172 sq ft

// 03 · Deck plan

Find Harmony of the Seas CI cabins on the deck plan

Deck 9 · 24 CI cabins

Swipe to pan · tap a cabin

CIInside24

// 04 · Alternatives

Closest alternatives to Harmony of the Seas CI

Only what's different from CI is shown.

Representative photo: Harmony of the Seas Interior cabin

Same size

Interior320 cabins

Same size, elsewhere on the ship

Decks 6, 7, 8, 9, 10, 11, 12 & 14−93 pts connectingSleeps up to 4

See 4V

Harmony of the Seas Promenade View Interior (2T) cabin, photo 1 of 6

Step up

Promenade View Interior24 cabins

More room inside

+22 sq ft insideDeck 7Leans midship−96 pts connectingSleeps up to 4

See 2T

Harmony of the Seas Interior (3V) cabin, photo 1 of 5

Similar, different spot

Interior152 cabins

Same size, on lower decks

Decks 3, 4, 6, 7, 9, 10, 11, 12 & 14−89 pts connectingSleeps up to 4

See 3V

// 05 · Location

Where CI inside cabins sit on Harmony of the Seas

Most CI cabins are forward: 79% of those with a recorded position. CI cabins are on decks 3, 6, 7, 8, 9, 10 and 11; deck 9 has the most (24).

Forward · Midship · Aft

BOWSTERN

Forward79%54 cabins

Midship15%10 cabins

Aft6%4 cabins

Port · Starboard

Port49%33 cabins

Starboard51%35 cabins

Deck spread

Deck 3

Deck 6

Deck 7

Deck 8

Deck 9

Deck 10

Deck 11

10 midship CI cabins 68 connecting CI cabins

// 06 · What's inside

What's inside a Harmony of the Seas CI inside cabin

These staterooms are similar to Royal Caribbean's standard Interior staterooms but offer a door that connects to the neighboring room. On Harmony of the Seas, Connecting Interior staterooms (category CI) measure 172 sq ft and sleep up to 2 guests. Beds: one Royal King bed that converts into two twin beds. Harmony of the Seas has 68 CI cabins, on decks 3 and 6–11.

One bathroom. Room with bed, vanity and sitting area with sofa.

Included

Dedicated stateroom attendant
Daily cleaning service
Exclusive bedding collection
Stateroom climate control
Ample closet and storage
In-room HD-TV
In-room safe for valuables
Hair dryer
Deluxe toiletries: shampoo, conditioner & body wash

// 07 · Photos

Harmony of the Seas CI cabin photos

Cabin

// 08 · Every cabin

All 68 cabins in category CI

Deck 3

2 cabins

3858 3860

Deck 6

2 cabins

6139 6141

Deck 7

10 cabins

7195 7197 7404 7406 7409 7411 7414 7416 7591 7593

Deck 8

10 cabins

8135 8137 8403 8405 8413 8415 8535 8537 8551 8553

Deck 10

12 cabins

10135 10137 10151 10153 10422 10424 10430 10432 10535 10537 10551 10553

Deck 11

8 cabins

11406 11408 11416 11418 11422 11424 11430 11432

// 09 · Known issues

Known issues in cabin category CI

No issues recorded for CI cabins.

// 10 · Prices

Inside prices on Harmony of the Seas

Prices are by cabin type. We don't price individual categories like CI; "See inside fares" opens current inside fares with our booking partner.

Lowest fare by type · per person / night

Inside is $6 less per night than an ocean view cabin.

$70

+$6$76

+$0$76

+$122$198

InsideOcean ViewBalconySuite

Fares as of Oct 9, 2026. Prices change daily.

Prices below recent average · now

56%of sailings

56% of upcoming Inside sailings are currently below their recent average fare.

See inside fares

// 11 · Other ships

CI on other Royal Caribbean ships

Harmony of the SeasTHIS SHIP68 cabins · 172 sq ft

172 sq ft

Wonder of the Seas91 cabins · 172 sq ft

172 sq ft

Allure of the Seas86 cabins · 172 sq ft

172 sq ft

Oasis of the Seas84 cabins · 172 sq ft

172 sq ft

Utopia of the Seas80 cabins · 170 sq ft

170 sq ft

Enchantment of the Seas70 cabins · 136 sq ft

136 sq ft

Symphony of the Seas70 cabins · 199 sq ft

199 sq ft

Anthem of the Seas50 cabins · 166 sq ft

166 sq ft

Odyssey of the Seas46 cabins · 166 sq ft

166 sq ft

Spectrum of the Seas40 cabins · 166 sq ft

166 sq ft

Quantum of the Seas38 cabins · 166 sq ft

166 sq ft

Ovation of the Seas34 cabins · 166 sq ft

166 sq ft

// 12 · FAQ

Harmony of the Seas CI cabin FAQ

How big is a Harmony of the Seas CI inside cabin?

Every Harmony of the Seas CI cabin is 172 sq ft. That is the most common inside size on Harmony of the Seas.

How many Harmony of the Seas CI cabins are there, and on which decks?

Harmony of the Seas has 68 CI cabins on decks 3, 6, 7, 8, 9, 10 and 11; deck 9 has the most (24).

How many people can stay in a Harmony of the Seas CI cabin?

Every Harmony of the Seas CI cabin with a recorded occupancy sleeps up to two.

What's the difference between cabin category CI and 4V on Harmony of the Seas?

Harmony of the Seas CI and 4V cabins are the same size (172 sq ft in total). 4V cabins are on decks 6, 7, 8, 9, 10, 11, 12 and 14; CI cabins are on decks 3, 6, 7, 8, 9, 10 and 11.

Do Harmony of the Seas CI cabins connect?

Yes: 68 of the 68 Harmony of the Seas CI cabins (100%) connect to a neighboring cabin.

// 13 · Next steps

Keep researching

CabinsAll Harmony of the Seas cabinsThe cabin types and categories, compared.Open Deck plansEvery deck, every cabinFull deck-by-deck plans for Harmony of the Seas.Open Cabin searchFind a specific cabinLook up any room number.Open ConciergeAsk the Cruise ConciergeNot sure CI is right? Ask us.Open