BalconyHarmony of the Seas · Cabin category 4D

Harmony of the Seas 4D Balcony Cabins

Cabin category 4D is a standard-size balcony cabin on Harmony of the Seas: 635 4D cabins on decks 6, 7, 8, 9, 10, 11, 12 and 14, each 182 sq ft with a 50 sq ft balcony.

635cabins

182 sq ft+ 50 sq ft balcony

Up to 4guests

6, 7, 8, 9, 10, 11, 12 & 14decks

See balcony faresBalcony cabins on Harmony of the Seas from $76 pp/night. We price by cabin type, not by category. Fares as of Oct 9, 2026.

Representative photo: Harmony of the Seas Ocean View Balcony cabin — Representative photo, shared with category 1D

// 01 · Floor plan

Harmony of the Seas 4D balcony floor plan

Harmony of the Seas Ocean View Balcony (4D) floor plan

Interior182 sq ft

Balcony50 sq ft

Total232 sq ft

Sleeps: Up to 4 guests445 cabins sleep 2 · 1 sleeps 3 · 189 sleep 4
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

4D's total size vs every category on the shipInterior plus balcony, from the smallest category to the largest.

4D232 sq ft

96 sq ft2N · smallest

2,367 sq ftRL · largest

// 02 · Compare

How Harmony of the Seas 4D cabins compare

Harmony of the Seas 4D balcony cabins are standard size: the same 182 sq ft as 7 other balcony categories, with a 50 sq ft balcony, the smallest among balcony categories; 10% of its cabins connect to a neighbor.

4D: 182 sq ft · tied #3 with 7 others of 10 balcony categories

Balcony avg · 200 sq ftShip avg · 358 sq ft

2DOcean View Balcony - Accessible272 sq ft 1AUltra Spacious Ocean View with Large Balcony271 sq ft 4DOcean View Balcony182 sq ft 1DOcean View Balcony182 sq ft 1JCentral Park View Balcony182 sq ft 1IBoardwalk View Balcony182 sq ft CBOcean View Balcony182 sq ft 2COcean View with Large Balcony182 sq ft 1COcean View with Large Balcony182 sq ft 3DOcean View Balcony182 sq ft

// 03 · Deck plan

Find Harmony of the Seas 4D cabins on the deck plan

Deck 6 · 89 4D cabins

Swipe to pan · tap a cabin

4DBalcony89

// 04 · Reviews

Harmony of the Seas 4D Cabin Reviews

5.0

4 reviewsFrom 4 different 4D cabins

Stayed in a 4D cabin on Harmony of the Seas? Help future cruisers know what to expect.

CleanCanyon

Sep 29, 2026

Cabin 11306

Very nice and quiet

Deck 11 · Port · Aft

YouthfulAnemone

Sep 28, 2026

Cabin 11722

As a balcony ocean side it was very quiet and was kept beautifully by our room attendant Reynan

Deck 11 · Starboard · Aft

SillyOsprey

Aug 20, 2026

Cabin 6548

Beautiful and spotless

Deck 6 · Starboard · Forward

GentleSeabreeze

Jul 28, 2026

Cabin 12698

Fantastic space spotless very clean perfect. Good size balcony good shower, big bed fridge in Room everything tip Top.

Deck 12 · Starboard · Aft

// 05 · Alternatives

Closest alternatives to Harmony of the Seas 4D

Only what's different from 4D is shown.

Same size

Ocean View Balcony4 cabins

Same size, on higher decks

Decks 11 & 12No connecting cabinsSleeps up to 2

See 3D

Harmony of the Seas Central Park View Balcony (1J) cabin, photo 1 of 2

Step up

Central Park View Balcony256 cabins

A bigger balcony

+2 sq ft balconyDecks 10, 11, 12 & 14Leans midship+3 pts connecting

See 1J

Harmony of the Seas Boardwalk View Balcony (1I) cabin, photo 1 of 6

Similar, different spot

Boardwalk View Balcony221 cabins

Similar size, on higher decks

+2 sq ft balconyDecks 8, 9, 10, 11, 12 & 14+16 pts connecting

See 1I

// 06 · Location

Where 4D balcony cabins sit on Harmony of the Seas

Most 4D cabins are aft: 69% of those with a recorded position. 4D cabins are on decks 6, 7, 8, 9, 10, 11, 12 and 14; deck 6 has the most (89).

Forward · Midship · Aft

BOWSTERN

Forward31%199 cabins

Midship0%0 cabins

Aft69%436 cabins

Port · Starboard

Port49%310 cabins

Starboard51%325 cabins

Deck spread

Deck 6

Deck 7

Deck 8

Deck 9

Deck 10

Deck 11

Deck 12

Deck 14

66 connecting 4D cabins 189 4D cabins that sleep 4

// 07 · What's inside

What's inside a Harmony of the Seas 4D balcony

Enjoy beautiful views of exotic ports, landscapes, seas and skies from your private balcony. On Harmony of the Seas, Ocean View Balcony staterooms (category 4D) measure 182 sq ft, plus a 50 sq ft balcony, and sleep up to 4 guests. Beds: one Royal King bed that converts into two twin beds. Harmony of the Seas has 635 4D cabins, on decks 6–12 and 14.

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

// 08 · Photos

Harmony of the Seas 4D cabin photos

Cabin

Balcony

Cabin

// 09 · Every cabin

All 635 cabins in category 4D

Deck 6

89 cabins

6130 6132 6134 6136 6138 6142 6144 6146 6148 6150 6152 6154 6156 6158 6160 6270 6272 6274 6276 6278 6280 6282 6284 6286 6288 6290 6292 6298 6300 6302 6304 6306 6308 6310 6312 6314 6316 6318 6320 6322 6324 6326 6328 6530 6532 6534 6536 6538 6542 6544 6546 6548 6550 6552 6554 6556 6558 6560 6566 6568 6570 6670 6672 6674 6676 6678 6680 6682 6684 6686 6688 6690 6692 6698 6700 6702 6704 6706 6708 6710 6712 6714 6716 6718 6720 6722 6724 6726 6728

Deck 10

84 cabins

// 10 · Known issues

Known issues in cabin category 4D

No issues recorded for 4D cabins.

// 11 · Prices

Balcony prices on Harmony of the Seas

Prices are by cabin type. We don't price individual categories like 4D; "See balcony fares" opens current balcony fares with our booking partner.

Lowest fare by type · per person / night

Balcony is the same per night as an ocean view cabin, and $122 less per night than a suite.

$70

+$6$76

+$0$76

+$122$198

InsideOcean ViewBalconySuite

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

Prices below recent average · now

54%of sailings

54% of upcoming Balcony sailings are currently below their recent average fare.

See balcony fares

// 12 · Other ships

4D on other Royal Caribbean ships

Harmony of the SeasTHIS SHIP635 cabins · 182 sq ft + 50 sq ft balcony

232 sq ft

Wonder of the Seas738 cabins · 182 sq ft + 50 sq ft balcony

232 sq ft

Symphony of the Seas655 cabins · 182 sq ft + 50 sq ft balcony

232 sq ft

Oasis of the Seas530 cabins · 182 sq ft + 50 sq ft balcony

232 sq ft

Odyssey of the Seas477 cabins · 182 sq ft + 55 sq ft balcony

237 sq ft

Anthem of the Seas427 cabins · 198 sq ft + 55 sq ft balcony

253 sq ft

Allure of the Seas361 cabins · 182 sq ft + 50 sq ft balcony

232 sq ft

Quantum of the Seas353 cabins · 198 sq ft + 55 sq ft balcony

253 sq ft

Spectrum of the Seas257 cabins · 198 sq ft + 81 sq ft balcony

279 sq ft

Serenade of the Seas150 cabins · 179 sq ft + 41 sq ft balcony

220 sq ft

Jewel of the Seas141 cabins · 179 sq ft + 41 sq ft balcony

220 sq ft

Brilliance of the Seas106 cabins · 179 sq ft + 41 sq ft balcony

220 sq ft

Voyager of the Seas36 cabins · 198 sq ft + 42 sq ft balcony

240 sq ft

Navigator of the Seas28 cabins · 198 sq ft + 42 sq ft balcony

240 sq ft

Liberty of the Seas20 cabins · 188 sq ft + 46 sq ft balcony

234 sq ft

Freedom of the Seas16 cabins · 188 sq ft + 46 sq ft balcony

234 sq ft

Explorer of the Seas15 cabins · 198 sq ft + 47 sq ft balcony

245 sq ft

Adventure of the Seas9 cabins · 162 sq ft + 47 sq ft balcony

209 sq ft

Mariner of the Seas9 cabins · 198 sq ft + 46 sq ft balcony

244 sq ft

Independence of the Seas8 cabins · 188 sq ft + 53 sq ft balcony

241 sq ft

Utopia of the Seas6 cabins · 191 sq ft + 50 sq ft balcony

241 sq ft

// 13 · FAQ

Harmony of the Seas 4D cabin FAQ

How big is a Harmony of the Seas 4D balcony cabin?

A Harmony of the Seas 4D cabin is 182 sq ft inside plus a 50 sq ft balcony: 232 sq ft in total. That is the most common balcony size on Harmony of the Seas.

How many Harmony of the Seas 4D cabins are there, and on which decks?

Harmony of the Seas has 635 4D cabins on decks 6, 7, 8, 9, 10, 11, 12 and 14; deck 6 has the most (89).

How many people can stay in a Harmony of the Seas 4D cabin?

Harmony of the Seas 4D cabins sleep up to four. 445 cabins sleep 2, 1 sleeps 3 and 189 sleep 4.

What's the difference between cabin category 4D and 3D on Harmony of the Seas?

Harmony of the Seas 4D and 3D cabins are the same size (182 + 50 sq ft). 3D cabins are on decks 11 and 12; 4D cabins are lower, on decks 6, 7, 8, 9, 10, 11, 12 and 14.

Do Harmony of the Seas 4D cabins connect?

Yes: 66 of the 635 Harmony of the Seas 4D cabins (10%) connect to a neighboring cabin.

// 14 · 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 4D is right? Ask us.Open