The Best Double Sofa Beds for Small Rooms (2026)

Finding a good double sofa bed is harder than it should be. "Double", "small double" and "king" get used interchangeably, and plenty of pull-out sofas sleep like a folded-up sofa rather than a proper bed. If your living room, studio or home office doubles as a guest room, you want full-size sleep without a full-size footprint. We looked at the Koala sofa bed range to find the size and setup worth buying.

A double sofa bed opens to roughly a 135cm-wide sleep surface — enough for one adult to stretch out, or a parent and a small child, while taking up less floor space than a king. Our top pick is the Koala Sofa Bed [4th Gen] in the 2.5-Seater (Double): it converts tool-free in seconds and sleeps on award-winning Kloudcell™ foam, with a full-size mattress built in.

Top Double Sofa Bed Picks

The Koala Sofa Bed comes in one design across three sizes, so you're really choosing the size that fits your room:

• Best double overall — Koala Sofa Bed [4th Gen], 2.5-Seater (Double)

• Best compact — Koala Sofa Bed [4th Gen], 1.5-Seater (Single)

• Best if you can size up — Koala Sofa Bed [4th Gen], 3-Seater (King)

• Best storage add-on — Koala Sofa Bed Ottoman

Best double sofa bed overall — Koala Sofa Bed [4th Gen], 2.5-Seater (Double)

The Koala Sofa Bed in the 2.5-Seater (Double) is the standout choice for narrow rooms. Its FlipBed™ design skips the clunky pull-out mechanism — flip the seat out, and you're in bed in seconds, no tools — and the sleep surface pairs Kloudcell™ open-cell foam with an integrated topper, so it feels like a bed, not a cushion stack. Every size shares the same build: removable washable covers, water-resistant fabrics on most colourways (Sandstone and Coastal Moss aren't), and deep 60cm seats that double as your everyday sofa. It holds a 4.9-star rating across more than 1,600 reviews.

Sizes: 1.5-Seater (Single) / 2.5-Seater (Double) / 3-Seater (King), priced from £1,050 (Single) up to £1,295 (King). The Double sits between the two — confirm its current price on the product page (see the pricing note below).

Best compact alternative — Koala Sofa Bed [4th Gen], 1.5-Seater (Single)

If a double is still too wide and you mostly host one guest, the same sofa bed in the 1.5-Seater (Single) is the most space-saving choice — same build, smaller footprint. It's the lowest-priced way into the range (from £1,050) and a good fit for studios, home offices and box rooms. Browse the full single sofa bed collection to compare.

Best if you can size up — Koala Sofa Bed [4th Gen], 3-Seater (King)

Have more room and want guests to sleep on a king? The 3-Seater opens to a full king-size sleep surface of 155 × 209cm (177cm wide as a sofa) and adds Zero Disturbance™ motion isolation, so two sleepers don't feel each other move. It needs more wall space than a double — but it's the pick if comfort for two matters most. It's the top of the range at £1,295.

Best storage add-on — Koala Sofa Bed Ottoman

Not a bed on its own, but the natural companion to the sofa. The Koala Sofa Bed Ottoman adds hidden storage under the lid, a flippable hard top that turns it into a side table, and removable washable covers in the same Koala fabrics. Use it as a footrest, extra seat or bedside surface for guests. From £270.

How We Chose These Double Sofa Beds

We ranked these on what decides whether a convertible sofa is worth living with: sleep-surface comfort, ease of conversion, everyday seat comfort, cleanability, and size-to-room fit. Because this guide is about double sizing, we weighted a genuine double-size sleep surface most heavily — which is why the 2.5-Seater (Double) leads. The Single and King are honest sizing alternatives on either side of it.

What to Look For in a Double Sofa Bed

Get the size right first. In the UK, a double measures about 135cm wide by 190cm long. Match it to who sleeps on it and the floor space you can spare when it's open.

These are standard UK mattress sizes for reference. Koala labels its sofa bed by seater — 1.5-Seater (Single), 2.5-Seater (Double) and 3-Seater (King) — so treat the sleep surface as comparable to a standard single, double or king.

Beyond size, four things separate a good double sofa bed from a frustrating one:

• Conversion. Flip-style designs like Koala's FlipBed™ are faster and have fewer parts to fail than traditional pull-out frames.
• The mattress, not the sofa. A real comfort layer (Koala uses Kloudcell™) is the difference between a good night's sleep and an achy morning; thin fold-flat pads let you feel the frame underneath.
• Upkeep. Removable, washable covers matter for daily use around kids or pets — most of Koala's fabrics are water-resistant too (though not every colourway).
• Delivery and fit. Measure doorways and stairwells — boxed, tool-free sofas are far easier to get upstairs than one-piece freight.

Final Verdict

For most people searching for a double sofa bed, the Koala Sofa Bed [4th Gen] in the 2.5-Seater (Double) is the pick — a genuine double sleep surface, converting in seconds onto Kloudcell™ foam, with washable covers that make it liveable day to day. Tight on space? Drop to the 1.5-Seater (Single). Room to spare for two sleepers? Size up to the 3-Seater (King), and add the Ottoman if you want hidden storage and a spare side table. If you mainly need a comfortable spare bed, the sofa beds for overnight guests collection is a good place to start.

Note on pricing: Prices shown are starting figures at the time of writing and vary by size and fabric. Koala runs regular sales throughout the year, so always check the current price on koala.com before you buy — you may find a live discount on the sofa you want.

Why Trust Koala

Koala designs its sofa bed in Sydney around the same Kloudcell™ sleep technology used in what Koala describes as Australia's most awarded mattress range, which has more than 50,000 five-star reviews across it, and the Koala Sofa Bed is a three-time ProductReview.com.au Award winner (2023–2025). Koala is also a certified B Corporation and a 1% for the Planet member. Every sofa bed ships with free UK delivery (some remote-area exclusions apply), a 5-year warranty and a 120-day free trial — so you can sleep on it before committing — and if it's not right, Koala collects it free.

Ready to sort your spare bed? The Koala Sofa Bed gives guests a real night's sleep without taking over the room — and a 120-day free trial lets you try it at home first. See the Koala Sofa Bed →

Frequently Asked Questions

Is a double sofa bed actually comfortable to sleep on?

It can be, if the sleep surface is built for it. Look for a dedicated comfort layer — Koala's Kloudcell™ foam and integrated topper feel close to a real mattress, which is what separates a proper night's sleep from a thin fold-flat pad. Deeper, supportive seats also make it comfortable as an everyday sofa.

Single, double or king — what size should I get?

A double measures about 135 × 190 cm, good for one adult or an adult plus a small child. A single (90 × 190 cm) suits one sleeper in the tightest rooms; a king (150 × 200 cm) is best for two but needs more floor space. The Koala Sofa Bed comes in all three as the 1.5-Seater, 2.5-Seater and 3-Seater. Choose based on who sleeps on it and the room you can spare when it's open.

How easy is the sofa-to-bed conversion?

On flip-style designs like Koala's FlipBed™, you remove the cushions and flip the seat out — usually just a few seconds, no tools. Traditional pull-out frames take more effort and have more moving parts.

Are double sofa beds good for small spaces and flats?

Yes — that's their main advantage over a larger sofa. A double sofa bed gives you a real guest bed without the footprint of a king, so they suit studios, home offices and flats. Measure both wall space and floor clearance in front for when it's open.

Are the covers washable and how do I clean it?

The Koala Sofa Bed's covers are removable, with water-resistant fabrics on most colourways (Sandstone and Coastal Moss aren't) for quick spot-cleaning and a machine-washable sleep-surface topper; the Ottoman's covers are removable and washable too. For everyday care, vacuum on low suction and keep it out of direct sunlight. Always check the care label sewn into the covers before washing.