Arthur Sleep Hotel Arthur Mattress
Mattress
Arthur Sleep Hotel Arthur Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
Layers
3
Layer Details
- Top layer. A premium comfort layer sits on top, although the listing doesn't specify exactly what it's made from. It provides the initial cushioning you'll feel when you lie down.
- Core. A 1000 pocket spring system forms the core, which means each spring responds to your body individually rather than as one unit. You get support where you press down and less motion transfer across the bed.
- Border. A 10cm foam encapsulated border wraps the springs, giving edge-to-edge support and a reinforced sleep surface. In practice, the mattress feels usable across its full width, including when sitting on the side.
Layer details from mattressman.co.uk product page, September 2026.
- Real space for one: The UK small double is 30cm wider than the UK single, which means a solo adult can stretch out or change position without an elbow off the edge.
- Fits rooms a double crowds: At 15cm narrower than the UK double, it can be the difference between a door that clears and one that doesn't in a box room or studio.
- Edge support matters more at 4ft: The 10cm foam encapsulated border keeps the surface usable right to the sides, so the narrower width feels wider in practice.
- Copes with occasional sharing: Independent pocket springs limit motion transfer, so a couple staying the odd night in a guest room won't feel every turn.
- Standard UK size for bedding: 4ft is a widely stocked UK size, so frames and small double fitted sheets are easy to find, unlike some in-between widths.
This size suits you if...
You're a solo adult, or a teenager who has clearly outgrown a UK single, and your room can't spare the width a UK double demands. It also fits if you're furnishing a guest room or holiday let where couples stay occasionally rather than every night, or a loft conversion where a 4ft 6in bed would leave no standing room beside it.
Consider another size if...
You share the bed every night, in which case 120cm across two adults will feel tight over time. We'd recommend the UK double instead, allowing at least 2.6m x 2.8m of room for it.
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Is a small double big enough for one adult on the Hotel Arthur?
Comfortably. At 120cm wide, the UK small double gives a solo sleeper 30cm more width than a UK single, and the Hotel Arthur's foam encapsulated border means that width is usable edge to edge. If you sleep alone and like to spread out, it's a sensible middle ground between the two standard sizes.
Can a couple share the Hotel Arthur small double?
For occasional nights, yes. The 1000 pocket springs move independently, so one person turning over disturbs the other less than a connected coil bed would. For nightly sharing, 120cm across two adults is tight, and we'd point most couples to the UK double, which is 15cm wider.
What room size do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m. That leaves walking space around the bed rather than just squeezing the mattress in. The UK small double is 15cm narrower than the UK double, so in a box room or loft conversion that margin often decides whether you keep a wardrobe or standing room beside the bed.
How does the small double compare with the UK king in this mattress?
The UK small double is 30cm narrower than the UK king and 10cm shorter, since kings run to 200cm long. The feel, firmness and spring system are identical across sizes. For a UK king you'd want a room of at least 2.7m x 2.9m, which is a fair step up from what the UK small double needs.
Will standard double bedding fit a small double mattress?
Fitted sheets need to be small double (4ft) size, as standard double sheets will bag at the corners. A standard double duvet works fine on top and gives a little welcome overhang on each side. Because 4ft is a common UK size, both sheets and frames are easy to find on the high street.