Romantica Serenade Ortho Small Double Mattress
The Romantica Serenade Ortho is a firm open coil mattress, 25cm deep, with soft white fibre fillings over a traditional interlaced spring system.
- Firm support that spreads your weight
- Damask cover won't trap heat
- Suits spare rooms & guest beds
£204
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Romantica Serenade Ortho Mattress
More available sizes
Mattress details
Mattress
Romantica Serenade Ortho Mattress
Size
Firmness
Firm
Construction
Orthopaedic
Depth (cm)
25
Layers
3
Layer Details
Comfort Layer
Soft white synthetic fibres sit at the top, which means a cosy surface feel rather than a sink-in one. They're durable and resilient, so the layer should hold its shape over time.
Support System
Traditional open coil springs are interlaced in a lattice design, which means the whole surface works together to spread your weight evenly. That helps relieve built-up pressure and supports spinal alignment, though it does mean more motion transfer than pocket springs if you share the bed.
Cover
A finely woven damask cover finishes the mattress, soft to the touch and built to last. It doesn't retain heat, which hot sleepers will appreciate.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Space to sprawl on your own: At 30cm wider than the UK single, you can sleep on your side with knees drawn up, or turn over, without an arm ending up off the edge.
- Fits rooms a standard double would crowd: Being 15cm narrower than the UK double can decide whether a wardrobe door still opens or you can walk round the foot of the bed.
- Firm support in a sensible footprint: The interlaced open coil springs spread your weight across the whole surface, which means steady, even support for one sleeper across the full width.
- A cooler choice for a small, warm room: The damask cover doesn't hold on to heat, a real help in a compact bedroom or loft conversion where warm air tends to collect.
- Easy to dress: The UK small double is a standard 4ft x 6ft 3in, so frames and fitted sheets are straightforward to find in ordinary shops.
This size suits you if...
You sleep alone and a single now feels cramped, or your bedroom is too tight for a standard double but you still want a proper double width, with the flexibility to host a couple for the occasional night.
Consider another size if...
You share the bed every night, particularly with a restless partner, as open coil springs pass movement across a narrow surface. We'd recommend the UK double instead; allow at least 2.6m x 2.8m.
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FAQ's
Is the Romantica Serenade Ortho small double a good upgrade for a teenager?
Often, yes. A teenager who has outgrown a single gains 30cm of width on the UK small double while the room keeps more floor space than a UK double would take. The firm open coil feel suits growing bodies that need steady support, although a very light teenager who sleeps on their side may find it a little firm at the hips.
Can a couple share the Serenade Ortho in a UK small double?
For a weekend guest or the odd night, yes. For nightly sharing it is a squeeze, and the open coil springs transfer more movement than pocket springs, so you are more likely to feel a partner turning over on a narrower surface. The UK double gives 67.5cm each for two sharing, which is far more comfortable long term.
What size room do I need for a UK small double Serenade Ortho?
We suggest allowing at least 2.4m x 2.8m for a UK small double. That leaves space to get in and out comfortably and open furniture doors. In a box room or studio, measure where the door swings before you order, because the bed's 120cm width is often what decides whether it still clears.
Will a Serenade Ortho small double fit in a loft conversion?
It is one of the more practical widths for a loft conversion, since at 120cm it can sit centrally under the highest part of a sloping ceiling and still leave room to stand beside it. The mattress is 25cm deep, so check your frame height too, as sitting up in bed under a low slope can be tighter than you expect.
Should I get the UK small double or UK double Serenade Ortho for one person?
If you sleep alone, the UK small double gives plenty of room on a firm surface and suits smaller bedrooms, with our suggested minimum of 2.4m x 2.8m. Choose the UK double only if you want the extra 15cm of width and your room allows at least 2.6m x 2.8m, or if a partner may start staying regularly.