Oceania Sirena Cruise Ship

Oceania Sirena at Argostoli in August 2018.

Photo: Kefalonia2015 | Licence: CC BY-SA 4.0; crop by CruisePing.

Oceania Sirena is a different proposition from Vista, Allura, Marina and Riviera. At 30,277 GT and 670 guests, it is roughly half the tonnage of the larger Oceania ships. Corridors are shorter, public rooms become familiar quickly and the vessel can feel more like a small hotel moving between ports than a resort that competes with the destination.

The ship entered service in 1999, but age should not be read from the launch date alone. A top-to-bottom OceaniaNEXT re-inspiration in 2019 renewed suites, staterooms and public areas. The underlying hull and room dimensions remain those of an older R-class ship, which is why Sirena rewards passengers who actively want compact scale rather than those simply looking for the cheapest Oceania fare.

Oceania Sirena at a glance

The booking decision

Book Sirena because you want a small ship. That sounds obvious, but it prevents the wrong comparison. A 670-guest vessel cannot offer the restaurant count, cabin dimensions or public-space breadth of Vista or Allura. What it offers instead is ease: less walking, fewer spaces to learn, faster familiarity with crew and fellow passengers, and an itinerary-led atmosphere.

For UK passengers, Sirena is especially interesting in summer 2026 because it uses Southampton on several Northern European and Iberian sectors. That removes the usual assumption that choosing a small Oceania ship means starting with a flight. The correct comparison is therefore Sirena from Southampton versus a larger ship or a fly-cruise on a stronger route.

The 2019 refurbishment improved the product, not the dimensions

Sirena’s 2019 work was extensive. Accommodation and bathrooms were renewed and public spaces were restyled as part of OceaniaNEXT. That is why current photographs show a much more contemporary interior than the ship’s 1999 build date might suggest.

The physical limitations of the original R-class design remain. Standard cabins can feel compact, bathrooms are smaller than on Vista and Allura, and storage needs more discipline on a long voyage. Passengers who are comfortable with that trade often appreciate how much easier the whole ship is to navigate. Those who regard a large bathroom and expansive veranda cabin as part of luxury should move up a generation.

Cabins: choose category and location carefully

Sirena has 337 current suites and staterooms, with nearly 70 per cent offering private verandas. The inventory includes inside, ocean-view, veranda, Concierge Level and suite categories. An ocean-view cabin can be excellent value on a destination-heavy itinerary because it provides daylight while preserving budget for excursions and hotels.

Cabin location matters more than chasing a high deck. The ship is already compact, so a quiet room away from service areas may be more useful than shaving another minute off the walk to a restaurant. On longer voyages, pay particular attention to storage, bathroom layout and whether a veranda will genuinely be used in the climate you are sailing.

Dining is smaller in number but not an afterthought

Sirena has four principal open-seating restaurants. The Grand Dining Room and Terrace Café cover flexible core dining, while Red Ginger provides the Asian specialty experience familiar elsewhere in the fleet. Tuscan Steak combines the Italian and steakhouse ideas that are separated into Toscana and Polo Grill on larger ships.

That consolidation is the essence of Sirena. You receive a recognisably Oceania food programme with fewer venues. On a seven- or ten-night cruise, that can feel entirely adequate. On a month-long voyage, passengers who need constant restaurant novelty may prefer Riviera, Marina, Vista or Allura.

Included dining, gratuities and Wi-Fi simplify the fare

Specialty dining, shipboard gratuities and Wi-Fi are included under current Your World Included. The fare also provides the choice between wine and beer by the glass during lunch and dinner restaurant hours or a shore excursion credit. Non-alcoholic drinks are widely included as part of the onboard offer.

Small-ship cruising does not make everything inclusive. Spa treatments, many excursions, cocktails and spirits outside the relevant benefit, private transfers and premium experiences can still add substantial cost. A Southampton departure may save flights, but compare the whole holiday before deciding it is automatically the cheaper Sirena option.

Eight bars and lounges do not make Sirena a nightlife ship

Sirena has eight lounges and bars, but the number should not be confused with a busy nightlife programme. Horizons is the forward observation lounge, Martinis provides a classic cocktail setting, and the other rooms support conversation, music and small-scale entertainment. The atmosphere is adult and sociable rather than high-energy.

Production shows and guest entertainers exist, but dinner and the itinerary remain more important. If you want multiple simultaneous shows, comedy clubs or late-night clubbing, the mismatch is with Oceania as a line rather than with Sirena specifically.

Pool deck, spa and the value of short walking distances

The pool deck is compact and straightforward, with a main pool and whirlpools rather than attraction hardware. Aquamar Spa + Vitality Center adds treatment and fitness facilities. On warm-weather itineraries the deck can become the social centre during sea days, while cooler routes shift more of the day into Horizons, the library and other indoor lounges.

Mobility is where the small scale can become a genuine practical advantage. At about 181 metres long, Sirena demands far less walking than a modern mega-ship. That does not automatically make it accessible for every disability, but passengers who fatigue over distance can find the basic geography much easier.

Southampton is a major 2026 advantage

Sirena departs Southampton for Oslo on 30 June 2026, returns to Southampton from Stockholm on 5 August, and leaves the same day for Barcelona. Those sectors create a useful sequence of Northern Europe and Iberian options that can be combined into longer voyages.

For British travellers, the convenience is significant. Avoiding an airport can turn a small-ship cruise from a complicated fly-cruise into a much simpler holiday. Do not let convenience hide the itinerary question, though. A Southampton sailing is valuable only if the ports and timing suit you.

A small ship can be excellent for ports, but tenders still matter

Sirena’s size supports itineraries where destination access is more important than onboard attractions. The ship can feel particularly appropriate in smaller European ports because the scale matches the purpose of the voyage. Long days ashore also reduce the importance of having a dozen different venues onboard.

Tendering can create a separate accessibility issue. A smaller ship may reduce walking onboard while still using ports where tender transfer is difficult or impossible for some passengers. Check every tender port and the exact accessible cabin before assuming small equals easy.

Sirena versus Regatta

Oceania Regatta is the closest CruisePing comparison. Both are 30,277 GT R-class ships with around 670 guests and 400 staff. The differences are venue details, itinerary, cabin availability and price rather than a completely different onboard concept.

Sirena has Tuscan Steak and Red Ginger as its signature specialty combination, while Regatta follows a slightly different restaurant mix. For most passengers the route will matter more. Choose the ship that visits the ports you want at the price and cabin category you are willing to buy.

Long voyages magnify both the strengths and limits of Sirena

A small ship can be particularly satisfying on a long port-led itinerary because daily movement is effortless and the public rooms quickly become familiar. Staff recognition, a favourite table in Horizons and short walks back to the cabin can create a rhythm that is harder to reproduce on a 1,200-guest ship. For passengers who enjoy routine rather than novelty, that intimacy is a real luxury.

The same familiarity can become a limitation when a voyage contains many sea days. Four principal restaurants, one modest pool deck and a restrained entertainment programme provide less rotation than Riviera, Vista or Allura. A 30-night itinerary therefore asks a more personal question than a seven-night cruise: will you enjoy settling into the same excellent spaces, or will you start wanting new venues simply for a change of scene?

Who is most likely to notice Sirena’s age

The 2019 re-inspiration refreshed Sirena substantially, but refurbishment cannot change the basic dimensions of a hull launched in 1999. Passengers arriving from recent premium ships are most likely to notice the smaller bathrooms, narrower cabin layouts and more compact public spaces. Those differences are structural rather than signs that the ship has been neglected.

Passengers moving from larger mainstream ships may notice something else first: how quickly they can get from cabin to restaurant, gangway or observation lounge. The ship’s age and size are therefore inseparable. If modern room proportions are essential, choose Vista or Allura. If easy movement and a more intimate scale matter more, Sirena can make the older platform feel like an advantage rather than a compromise.

Before you book Oceania Sirena

• Treat the compact cabin and bathroom dimensions as part of the R-class trade, not as a surprise after boarding.
• Compare the June and August 2026 Southampton sectors if avoiding flights is important.
• Choose an ocean-view cabin when balcony use is unlikely to justify the premium on a port-intensive route.
• Check tender ports and exact accessible-room geometry if mobility is a concern.
• For voyages with many sea days, decide whether four principal restaurants provide enough variety for you.

Oceania Sirena compared with other Oceania ships

Related CruisePing guides

• Oceania Cruises guide
• Which Oceania cruise ship is best for you?
• Oceania Regatta guide
• Oceania Riviera guide
• Oceania Vista guide
• Oceania Allura guide
• Flying versus sailing from the UK
• Cruise gratuities guide

Useful official links

• Oceania Sirena ship page
• Sirena suites and staterooms
• Sirena dining
• Sirena deck plans
• Sirena 2019 re-inspiration
• Sirena Southampton to Oslo, 30 June 2026
• Sirena Southampton to Barcelona, 5 August 2026
• Your World Included
• Oceania terms and conditions