The main Diamond Princess cabins to avoid are the ones right under the Lido Deck pool and buffet, the ones next to lift lobbies and self-service launderettes, and high forward cabins if you get seasick. Watch out too for oceanview grades with lifeboats outside the window and for balconies that higher decks can see into. For the best mix of calm, space and value, most passengers do well with a midship balcony or mini-suite on Decks 9 to 11, or an aft-facing balcony if wake views matter more to you than a short walk.
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The sections below cover the cabin types and grades on Diamond Princess, which locations to skip and why, and the cabins worth paying for. There is also a quick note on where the ship sails in 2026 and 2027, because the season affects which cabin makes sense.
Diamond Princess at a Glance
Diamond Princess is a Grand-class ship built in Japan by Mitsubishi Heavy Industries. She sailed her first cruise in March 2004 and her twin is Sapphire Princess, which shares an almost identical cabin layout. According to Princess Cruises’ official fact sheet, she measures 115,875 tons, has 18 decks and 1,353 staterooms, and carries 2,710 guests at double occupancy (recent Princess announcements describe her as carrying up to about 2,670 guests).
The ship has been adapted for the Asian market. A $30 million drydock in Singapore in 2014 added the Izumi Japanese bath, an onsen-style complex of about 8,800 square feet on Deck 15 that was billed as the largest of its kind at sea. The same refit brought in the larger Kai Sushi restaurant, a new Horizon Court buffet and 14 extra cabins. Every stateroom also got the Princess Luxury Bed in a later 2018 refurbishment.
Where Diamond Princess sails in 2026 and 2027
Most of the ship’s time is spent in Asia, not North America. Her 2026 Japan season ran from February to November, with cruises from the Tokyo area. From November 2026 to March 2027 she is based in Singapore, sailing 10- to 31-night voyages to places such as Ha Long Bay, Hong Kong and Bangkok. For 2027, Princess plans its biggest Japan season so far, with Diamond Princess and Sapphire Princess both sailing from the Tokyo region between March and December. US travelers will therefore usually fly to Tokyo or Singapore to join her. If you’re comparing fares, see our roundup of cruise deals for 2027.
Diamond Princess Cabin Types and Grades
The official counts are 377 inside cabins, 236 oceanview cabins, 524 balcony cabins, 184 mini-suites and 32 suites. There are also 24 connecting cabins and 27 wheelchair-accessible cabins. The sizes below are approximate and come from the Princess fact sheet, Cruise Critic and CruiseMapper. Sizes for the same grade can differ by a few square feet depending on where the cabin is.
| Cabin type | Approx. size | Where you find them | Good to know |
|---|---|---|---|
| Inside | 160-182 sq ft | Most stateroom decks | Cheapest option. A midship inside cabin on a low deck is one of the steadiest places on the ship. |
| Oceanview | 160-200 sq ft | Decks 5, 8 and higher forward areas | Some have portholes. Obstructed grades look onto lifeboats. |
| Balcony | about 170 sq ft plus a 45-90 sq ft balcony | Decks 8 to 12, plus forward on Deck 14 | The most common grade. Balcony depth varies by deck. |
| Mini-suite | about 275 sq ft plus balcony | Mainly Deck 9 (Dolphin), a few on Deck 8 | Separate sitting area, a bath tub and two TVs. Much more space than a balcony cabin for a modest step up in price. |
| Suites (Vista, Penthouse, Premium, Owner’s, Grand) | about 305-615 sq ft plus large balconies | Mostly aft, with a few forward | Suite perks include priority boarding and Lotus Spa thermal suite access. |
Princess sells each type in several price grades. Inside cabins run from IA to IF, balconies are B and BA to BF, and mini-suites are M grades. Higher grades usually mean a better (more midship or higher) location, not a different cabin. Paying for the top grade within a type is often a cheap way to get a quieter spot.
Diamond Princess Cabins to Avoid
No cabin on the ship is truly bad. Cruise Critic’s editors make the same point. But some locations come with trade-offs you should know about before booking. These are the main Diamond Princess cabins to avoid, depending on what bothers you.
1. Cabins under the Lido Deck
The pools, Horizon Court buffet, Trident Grill and Prego Pizzeria are all on Deck 14 (Lido). The cabins underneath on Deck 12 (Aloha) can pick up the scrape of deck chairs being set out early in the morning, trolleys moving around the buffet, and the occasional poolside event. If you sleep lightly, look at the deck plan and choose a Deck 12 cabin that sits under other cabins rather than under public areas.
2. Cabins under the spa, gym and Izumi bath
The Lotus Spa, fitness center and Izumi bath are on Deck 15. The forward cabins on Deck 14 sit just below them, so you might hear early-morning workouts or equipment. Not everyone notices it, but it’s worth checking which venue is above you before you pay extra for a high-deck cabin.
3. Cabins above or below busy public rooms
Deck 7 (Promenade) holds the upper level of the Princess Theatre, Explorers Lounge, the Wheelhouse Bar and Crooners, and Deck 6 has the casino and dining rooms. Some cabins on Deck 8 (Emerald) sit directly above these venues, and some on Deck 5 are below them, so you can hear late-night music or early-morning kitchen work. Skywalkers Nightclub is at the very top of the ship, so music from there is rarely a problem for cabins.
4. Forward balconies and high forward cabins
Forward balconies on the upper decks can be very windy once the ship is moving, which makes them hard to use on sea days. Cabins high and far forward also feel the most pitching in rough water. That matters on Diamond Princess, because spring cruises around northern Japan and late-summer sailings toward Okinawa and Taiwan (typhoon season) can bring real swells. If you get seasick, choose a low deck in the middle of the ship.
5. Aft cabins if vibration bothers you
Aft cabins have great views, but some passengers report vibration from the engines and propellers, especially when the ship is maneuvering in port. If you’re sensitive to it, treat this as a trade-off rather than a reason to rule aft cabins out.
6. Obstructed-view oceanview cabins
Some oceanview grades, especially the cheapest outside cabins on the lower stateroom decks, look straight onto lifeboats. Princess labels these as obstructed or partially obstructed, so check the grade code before you book. If daylight is all you want, an obstructed oceanview can still be good value. If you want to watch the sea, an inside cabin plus time on the open Promenade Deck may be the better deal.
7. Cabins next to launderettes and lift lobbies
Self-service launderettes on the stateroom decks get steady traffic, especially on sea days, and the machines hum. Cabins right beside lift lobbies have the same problem, with doors and chatter late at night. On the other hand, being a few doors from a lift is very handy. The trick is to be close to the lifts without sharing a wall with them.
8. Connecting cabins (unless you’re using the connection)
Diamond Princess has 24 connecting cabins. The interior door between them lets far more sound through than a solid wall does. These cabins are perfect for families or friends travelling together but can be noisy for strangers on the other side. The deck plan marks them, so avoid them unless you have booked both.
9. Balconies that can be overlooked
On Grand-class ships, balconies on some decks stick out further than the ones above them. The Dolphin Deck mini-suite balconies on Deck 9 are the usual example: they are bigger, but guests on higher balconies can partly see into them. Some aft Vista suite balconies also have a support beam that partly blocks the view. If privacy matters to you, check whether a balcony is open from above before you book.
Best Cabins on Diamond Princess
Here are the cabins that tend to deliver the most for the money, ordered from most budget-friendly to most indulgent.
- Midship inside cabins on Decks 9 to 11. Quiet corridors, little motion and the lowest fares. A smart choice on port-heavy Japan cruises where you’re ashore most days.
- Midship balconies on Decks 10 and 11 (Caribe and Baja). These are sandwiched between other cabin decks, so there’s little noise from above or below. You also get short walks to the lifts and steady motion.
- Mini-suites on Dolphin Deck. They have roughly 60 percent more space than a standard balcony cabin and a separate sitting area. Their deeper balconies can be overlooked, as noted above. Cruise Critic names them the best “splash” choice on board, and they suit long voyages like 21- to 31-night Asia itineraries. For a closer look at the same cabin style on a related ship, see our guide to Ruby Princess mini-suites and suites.
- Aft-facing and aft-corner balconies. Wake views and corner balconies that are often bigger than the standard ones make these very popular. Book early, and accept a longer walk to the front of the ship and possible vibration.
- Suites, especially the Grand Suite and Owner’s Suites. The single Grand Suite has a large wrap-around layout with a separate bedroom and a jetted tub. Suite guests also get Princess’s suite perks, such as priority boarding and access to the Lotus Spa thermal suite.
How to Pick the Best Room on a Cruise Ship Like Diamond Princess
The general rules for picking the best room on a cruise ship apply strongly to a ship this size.
- Check the deck above and below. A cabin with other cabins above and below it is almost always the quietest choice.
- Think about the season. Cherry-blossom cruises in spring can be cool and breezy, so a balcony may get less use than in Southeast Asia. In the hot, humid Singapore season, a balcony is often used mainly in the early morning and evening.
- Consider a guarantee fare carefully. A guarantee fare means Princess picks your exact cabin, so it can put you anywhere in that type, including under the Lido Deck or by a launderette. If location matters to you, pay for a specific cabin.
- Look at the sister ships too. The same layout logic applies across the Grand class, so tips for Grand Princess cabins to avoid carry over well to Diamond Princess.
- Use the official deck plans. Princess.com shows the current deck plans with symbols for launderettes, connecting doors, accessible cabins and Pullman beds. Check it against your cabin number before paying a deposit.
If you are weighing up a newer, larger Princess ship, our guide to Regal Princess cabins to avoid covers the SeaWalk balconies and noisy decks to watch for.
FAQs
What is the best deck to stay on Diamond Princess?
For most passengers, Decks 10 (Caribe) and 11 (Baja) are the best decks. Both have cabin decks above and below, so there’s little noise from public areas, and midship cabins there feel little motion.
Which Diamond Princess cabins should I avoid if I get seasick?
Avoid cabins that are high up and far forward or far aft. A midship cabin on a low or middle deck moves the least, and an inside cabin there is a good budget choice.
Are cabins under the Lido Deck on Diamond Princess noisy?
They can be. Deck 12 cabins under the pools and Horizon Court buffet may hear deck chairs and trolleys early in the morning. Check the deck plan and choose a cabin that sits beneath other cabins rather than public areas.
Is a mini-suite worth it on Diamond Princess?
On longer cruises it often is. You get a lot more room and a separate sitting area for a fairly small price jump over a balcony cabin. Just remember that the deeper Dolphin Deck balconies can be seen from above.
Where is Diamond Princess sailing in 2026 and 2027?
She sails from Singapore from November 2026 to March 2027, then joins Sapphire Princess for a Japan season from the Tokyo region between March and December 2027.
