The Celebrity Millennium cabins to avoid are mainly on Deck 9 directly under the Deck 10 pool deck, on Deck 11 below the Rooftop Terrace and sports court on Deck 12, and on Deck 6 above the busy public rooms on Deck 5. Very far forward cabins are also worth skipping if you get seasick, along with the few verandas sold as partial view. For a quiet, steady cabin, pick a midship room on Decks 6 to 8 or on Deck 3 that has other cabins above and below it.
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Millennium is Celebrity’s oldest ship. It entered service in 2000 and was heavily rebuilt in 2019, so its cabin plan holds a few surprises. Below you will find the stateroom types, the spots that draw complaints, and the Celebrity Millennium best cabins for each budget.
Celebrity Millennium at a glance (late 2026)
Millennium is the lead ship of Celebrity’s four-ship Millennium class. Its sisters are Infinity, Summit and Constellation. The ship is roughly 91,000 gross tons and carries about 2,200 guests at double occupancy. Listings put the number of staterooms at roughly 1,080, spread across eight cabin decks.
The changes that matter most for cabin choice came in early 2019. A 35-day drydock in Singapore, the first of the Celebrity Revolution makeovers, redesigned every stateroom and bathroom, created the Retreat Lounge and Retreat Sundeck, and added 30 new staterooms: 13 AquaClass, seven ocean view and ten inside. We could not find a later refit that changed the cabins, but check the current deck plan on Celebrity’s website before you book.
For 2026-27 Celebrity lists Millennium in Asia all year. Sailings include Japan voyages from Tokyo (Yokohama) and Southeast Asia trips from Singapore and Benoa in Bali.
Celebrity Millennium cabins and staterooms explained
Celebrity’s official accommodation page gives the size ranges below. Veranda sizes vary a lot because of the extra-large aft and family balconies.
| Stateroom type | Cabin size (approx.) | Veranda (approx.) | Main decks | Good to know |
|---|---|---|---|---|
| Inside | 171 to 347 sq ft | None | 2, 3, 7, 8, 11 | Cheapest fares. The larger sizes are accessible cabins. |
| Ocean View | 171 to 381 sq ft | None | 2, 3, 6, 7, 8 | Decks 2 and 3 are low and stable. Deluxe Ocean Views sit forward. |
| Veranda | 175 to 296 sq ft | 38 to 242 sq ft | 6 to 9 | Includes partial-view, deluxe, family and aft Sunset Verandas. |
| Concierge Class | 191 sq ft | 42 sq ft | 6 to 9 | Veranda cabin with priority perks and extra in-room touches. |
| AquaClass | 190 to 200 sq ft | 42 to 62 sq ft | 9 and 11 | Spa-focused perks, Persian Garden access and dining in Blu. |
| The Retreat (suites) | Sky Suite to Penthouse | Varies | 6 to 9 (top suites aft on 6) | Retreat Lounge, Retreat Sundeck, a private restaurant and butler service in most suite levels. |
Inside and ocean view staterooms
Inside cabins and standard ocean view rooms are close to the same size. The extra money for an ocean view buys natural light rather than space. Most ocean views are on Decks 2 and 3, low and close to the waterline. For motion, that is the best place to be. Ten of the inside cabins added in 2019 were placed midship, a handy spot if you want a cheap cabin with a short walk to everything.
Veranda and Concierge Class staterooms
Standard verandas fill most of Decks 6 to 9. Celebrity also sells larger Deluxe Verandas, Family Verandas with very big aft balconies, and Sunset Verandas that face the wake. Concierge Class uses the same basic veranda layout. It adds extras such as priority boarding, upgraded amenities and help from a dedicated concierge. If you are comparing a balcony with an inside cabin for a hot Southeast Asia itinerary, our guide on whether a balcony is worth it over an inside cabin sets out the trade-offs.
AquaClass
Millennium has a little over 100 AquaClass cabins, split between Deck 9 and Deck 11. They are a similar size to a standard veranda. Guests get spa perks such as Persian Garden thermal suite access and dining in Blu, the AquaClass restaurant. Location matters more for AquaClass than for any other category on this ship, because both AquaClass decks sit directly under busy outdoor areas (see below).
The Retreat suites
Suites on Millennium range from Sky Suites (around 250 sq ft plus balcony) to Celebrity Suites, Royal Suites and two large Penthouse Suites at the stern of Deck 6. All of them come with The Retreat: the 24-hour Retreat Lounge, the Retreat Sundeck with its own hot tub, and the suite-only restaurant. Two Celebrity Suites, often listed as 6104 and 6106, have floor-to-ceiling windows instead of a balcony. Check for this if a balcony matters to you.
Connecting and accessible cabins
Industry listings count about 165 connecting cabins and around 26 accessible staterooms. Accessible rooms, with wider doors and roll-in showers, come in most grades. A connecting door lets in more sound than a solid wall, so avoid one if you are not travelling together.
Celebrity Millennium cabins to avoid
There are no truly bad cabins on Millennium. Problems come from what sits above or below a cabin, how far forward it is, and whether the view is blocked. Look closely at these spots before you book:
- Deck 9 cabins under the pool deck. Deck 10 holds the main pool area and the Solarium. Cabins on Deck 9 beneath them, including several AquaClass rooms, can pick up early-morning lounger dragging, deck cleaning and, according to some guests, a hum from the pool filtration equipment. Forum posters often name cabins around 9127 and 9175 as louder. They suggest the stretch from roughly 9125 to 9133 on the port side and 9104 to 9112 on the starboard side as quieter. Treat these as passenger reports, not guarantees.
- Deck 11 cabins below the Rooftop Terrace. Deck 12 has the Rooftop Terrace, where outdoor movies are shown, and a sports court. Some guests on the AquaClass section of Deck 11 say they could hear film soundtracks or foot traffic, mostly from the balcony. Cabins 1140 and 1141 are the ones mentioned most often. Cabins next to stairwell or outside doors can also hear doors slam in high winds.
- Deck 6 cabins over public rooms. Deck 5 and Deck 4 hold lounges, bars, shops and the upper levels of the theater. Most Deck 6 cabins are quiet, but those directly above late-night venues can catch music and the sound of furniture moving after midnight. Compare Deck 5 on the deck plan with your cabin number before you commit.
- Far forward cabins if you are prone to seasickness. The bow moves the most in a swell. The forward ends of Decks 6 to 9 hold the Deluxe Ocean Views and the partial-view verandas, plus Concierge’s larger forward balconies. They are lovely on calm seas, but in typhoon season or across the South China Sea they can feel lively. Very low forward cabins on Deck 2 may also hear the anchor being dropped early on tender port mornings.
- Partial-view verandas. A small group of verandas, mostly forward on Decks 7 to 9, are sold in a partial-view category because part of the view is blocked by the ship’s structure. They are priced lower for that reason. Book one knowingly if you like the price, but not by accident.
- Cabins beside service doors and lift lobbies. Corridor traffic and trolleys are loudest here. A cabin a few doors along is usually quieter.
- Some aft cabins if you are sensitive to vibration. Aft balconies are popular for their wake views, but some light sleepers notice vibration when the ship manoeuvres in port.
Celebrity Millennium best cabins to book
If you are not sure where to start, midship cabins with other staterooms directly above and below are the safest choice on any deck. These are our picks by type:
- Best for seasickness: a midship ocean view or inside cabin on Deck 3. This is about as low and central as you can get while still being close to the Grand Foyer. Passengers often recommend ocean views such as 3112 and 3114 on Millennium-class ships.
- Best value veranda: a standard veranda midship on Deck 7 or 8. You get a cabin sandwiched between other cabins, a short walk to the lifts and decent stability.
- Best Concierge Class: the forward group on Deck 6 that regulars call the “Sweet 16”. These 16 cabins, eight on each side, have noticeably larger balconies than the standard Concierge rooms. They are not ideal if you are prone to seasickness.
- Best AquaClass: quieter Deck 9 cabins away from the pool’s centre line, or the aft section of Deck 11, which has easy stair access to the aft bar and buffet. Avoid the handful directly beneath the Rooftop Terrace screen.
- Best for families: Family Verandas at the stern of Decks 7 to 9, which sleep up to five and have very large balconies, or a pair of connecting veranda cabins.
- Best splurge: a Royal Suite or Penthouse Suite at the stern of Deck 6, with huge wake-facing balconies and full Retreat access.
Choosing your cabin for Millennium’s Asia itineraries
Most cabin guides miss this point: Millennium’s location changes the usual advice. Many 2026-27 sailings run near the equator, around Singapore, Thailand, Vietnam and Bali, where balconies get very hot in the afternoon. Deck 11 balconies feel this most on sea days. Lower-deck verandas get a little more shade from the decks above. On one-way voyages, your choice of port or starboard can decide which side gets the afternoon sun.
On Japan and Korea itineraries, weather matters more. From late summer into autumn, typhoons and tropical storms in the western Pacific can send in big swells. If you get seasick, that is when a midship cabin on Deck 3 or Decks 6 to 8 is worth paying for.
Other Celebrity cabin guides
Infinity, Summit and Constellation are built to the same Millennium-class design. The pattern of noisy spots is broadly similar, but each ship has had its own refits, so cabin numbers and venue positions do not always match. Check the sister ship’s own deck plan before you book. For Celebrity’s newer ships, which have very different layouts, see our dedicated guides:
| Ship | Class | How it compares with Millennium |
|---|---|---|
| Celebrity Edge cabins to avoid | Edge | Newer design with Infinite Verandas and a very different deck layout |
| Celebrity Apex cabins to avoid | Edge | Edge-class sister with similar concerns but different cabin numbering |
| Celebrity Xcel cabins to avoid | Edge | The fifth Edge-class ship (2025), with its own noisy spots |
| Infinity, Summit, Constellation | Millennium | Similar layout to Millennium. Confirm details on each ship’s deck plan. |
FAQs
Which cabins should I avoid on Celebrity Millennium?
The main ones are Deck 9 cabins directly under the Deck 10 pool deck, Deck 11 cabins below the Rooftop Terrace (guests often mention 1140 and 1141), and Deck 6 cabins above late-night venues. If you are prone to seasickness, also skip far forward cabins. Partial-view verandas are fine only if you book them knowingly.
What is the best deck on Celebrity Millennium?
For balance and quiet, Decks 7 and 8 midship are hard to beat, because they have cabins above and below. For the smoothest ride, Deck 3 midship ocean view and inside cabins are a popular choice.
What are the cabin classes on Celebrity Millennium?
Celebrity sells Inside, Ocean View, Veranda, Concierge Class and AquaClass staterooms, plus suites in The Retreat. The suites range from Sky Suites up to Celebrity, Royal and Penthouse Suites.
Is AquaClass on Celebrity Millennium worth it?
It can be, if you will use the Persian Garden and Blu restaurant. Choose the location carefully, though. Some Deck 9 AquaClass cabins sit under the pool deck and some on Deck 11 sit below the Rooftop Terrace, so check the deck plan before paying the premium.
Do Infinity, Summit and Constellation have the same cabins to avoid?
Broadly, yes. All four ships share the Millennium-class design, so the same types of noisy locations apply. Each ship has had its own refits, however, so confirm cabin numbers and venue positions on that ship’s own deck plan.
