Romantica Adagio Extra Firm Mattress
Mattress
Romantica Adagio Extra Firm Mattress
Size
Firmness
Extra Firm
Construction
Depth (cm)
25
Layers
3
Layer Details
- Comfort Layer. Soft white fibre fillings, which are soft synthetic fillings that create a cosy feel at the surface. They're durable and resilient, so this top layer shouldn't flatten quickly.
- Orthopaedic Layer. A layer of compressed polyester designed to provide enhanced spinal alignment and joint support. In practice, this is what gives the mattress its extra firm, posture-supporting character.
- Support System. Traditional open coil springs, interlaced and joined in a lattice design. This distributes your weight evenly across the bed, relieving built-up pressure and helping keep your spine aligned.
Layer details from mattressonline.co.uk product page, September 2026.
- Leaves room for everything else: At 90cm wide, the UK single leaves floor space for a desk, wardrobe or toy storage in a bedroom where every bit of space is already spoken for.
- Suits raised frames with a depth check: The Adagio is 25cm deep, so if you're fitting a bunk, cabin or mid sleeper, compare that depth with the frame maker's stated maximum before ordering.
- Firm support for one sleeper: Open coil springs sit under a compressed polyester layer, which means one back or stomach sleeper gets a level, supportive surface without sagging in the middle.
- Practical for a twin guest room: Two UK singles let guests who don't share a bed sleep separately, and the fibre top layer keeps the firm surface feeling a little less stark.
- Fits under a sloping ceiling: In a loft conversion, a narrow 90cm footprint is often the only shape that tucks neatly under the slope while leaving standing room beside the bed.
This size suits you if...
You're furnishing a child's or teenager's room where the bed has to share space with storage and a desk, you're kitting out a spare room that also works as a home office, or you sleep alone on your back or front and want a firm surface in a compact footprint.
Consider another size if...
You share the bed, or you sprawl and find 90cm cramped. For more space alone, we'd recommend the UK small double, allowing at least 2.4m x 2.8m. Couples would be better served by the UK double.
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Will the Romantica Adagio UK single fit a bunk bed or mid sleeper?
The UK single is the standard size for bunks, cabins and mid sleepers, so the 90 x 190cm footprint should suit most frames. Depth needs more care: the Adagio is 25cm deep, and raised frames often set a maximum mattress depth so the guard rail stays effective. Check the frame maker's guidance against that 25cm figure before you order.
What size bedroom do I need for a Romantica Adagio single?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk round the bed and open drawers, which matters in a child's room where a wardrobe and desk are also competing for the floor.
Is a UK single Adagio long enough for a tall adult?
The UK single is 190cm long, or 6ft 3in. Taller sleepers who find their feet reaching the end could size up to the UK king, which is 10cm longer, though it needs a much bigger room. We suggest at least 2.7m x 2.9m for the UK king.
Romantica Adagio single or small double: which should I buy?
The UK single is 30cm narrower than the UK small double, and both are the same length. If you sleep alone and have the floor space, the extra width gives you room to turn over freely. We suggest at least 2.4m x 2.8m for the UK small double, compared with 2.1m x 2.8m for the UK single.
Can I put two Adagio singles in a guest room instead of a double?
Yes, and it suits friends or siblings who'd rather not share. Measure the room carefully, because you'll want a walkway between the beds as well as around them. Bear in mind the extra firm feel: guests who sleep on their back will likely be comfortable, while side sleepers may find it hard on the shoulders.