Romantica Serenade Ortho Single 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
£169
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
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
- Leaves floor space free: At 3ft wide, a UK single leaves room for a desk, wardrobe or toy storage, and we suggest allowing at least 2.1m x 2.8m of floor space.
- Sized for raised frames: The 90 x 190cm footprint matches standard single bunk, cabin and mid sleeper frames, so the only figure left to check is the frame's maximum mattress depth.
- Motion transfer barely matters: Open coil springs pass on more movement than pocket springs, but with one sleeper on a UK single there is no partner to disturb.
- Flexible guest set-ups: A pair of UK singles lets a spare room host two friends, siblings or relatives who would rather not share a bed.
- Cooler under a sloping ceiling: The damask cover doesn't hold on to heat, which helps in a loft conversion bedroom where a narrow bed tucks under the slope and warm air tends to gather.
This size suits you if...
You sleep alone and prefer a firm surface, you're furnishing a child's or teenager's room where the bed competes with a desk and storage, or you need a guest bed for a spare room that also serves as an office.
Consider another size if...
You share the bed regularly or like room to spread out. We'd recommend the UK small double instead, which is 30cm wider; allow at least 2.4m x 2.8m for the UK small double.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Will the Romantica Serenade Ortho UK single fit a bunk bed or mid sleeper?
At 90 x 190cm, the UK single matches the standard single size used by most bunk, cabin and mid sleeper frames. The mattress is 25cm deep, so check the frame maker's stated maximum mattress depth before ordering. On a raised bed, a mattress that sits too high can bring the sleeper closer to the top of the guard rail.
How much room do I need for a Romantica Serenade Ortho UK single?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves space to walk round the bed and open a wardrobe or pull out a desk chair, which is why the UK single suits box rooms, studies and smaller children's bedrooms.
Is the Serenade Ortho UK single a good mattress for a teenager's room?
It can be, particularly for a teenager who sleeps on their back or front and likes firm support. A slim, lightweight side sleeper may feel pressure at the shoulders, although some owners describe the feel as closer to medium-firm than truly firm. The cover doesn't retain heat, which helps in a warm upstairs room.
Should I buy the Serenade Ortho in a UK single or a UK small double for one adult?
Choose the UK single if floor space is tight or the bed sits in a spare room used occasionally. The UK small double is 30cm wider and the same length, which gives an adult more room to turn over, but we suggest at least 2.4m x 2.8m of floor space for it.
Is the Romantica Serenade Ortho single suitable for a guest room?
Yes, especially if you want flexibility. Two UK singles in one spare room can sleep two guests who aren't a couple, and a single UK single leaves space for a desk when the room works as an office. The firm feel suits most short stays, though guests used to plush mattresses may notice it.