The Romantica Adagio Extra Firm mattress really is a proper old-school, no-nonsense build. It’s made from traditional open coil springs covered with soft white fibres. The Damask cover is a finely woven fabric over a hand-tufted top, fairly traditional, not thick and plush like some of the newer hybrid styles. One owner called it a “Good old fashioned style mattress with modern materials”. The cover is fire resistant and it has reinforced mattress edges for extra durability. Orthopaedic support is provided by the springs and this mattress, at 25cm deep, is double-sided to provide comfort for all your sleeping positions.
The reinforced mattress edge adds a touch of luxury to this traditional mattress, allowing you to use the full width of the mattress without any risk of roll-off. Owners are split on how well the edge copes when you sit on it: one wrote “Love the extra firm edge”, another that “when you sit on the edge it just folds down”. I’d expect a reinforced border to stiffen the perimeter of an open coil unit, which fits the happier reports. That said, it’s still not the same as a proper foam-encased edge you get on some pocket spring models, so if you perch on the side a lot you’ll notice it’s a bit more ‘springy’.
Orthopaedic support provides extra tension for the whole body to help protect against aches and pains. The springs have been tightened for the extra firm rating and the polyester fibres on top are compressed, so on your back it should keep you level through the hips and lower back, it’s the sort of firm that keeps you up on top rather than letting you sink in. Owners who wanted that for a bad back are largely pleased with it. One called it “firm like a padded board”, and meant it kindly. On your side I’d expect very little give for the shoulder to sink into. Some owners ended up adding a topper and one said it “could really do with more padding”, so if you’re lighter in weight or you like a bit of give, this extra firm feel could be too much.
Ideally suited to those that are looking for a firmer feel, this mattress is well priced in a typically higher-priced market due to its extra firmness rating, there aren't many competing products in this space. The trade-off with open coil is you don’t get the same motion isolation as pocket springs, so if you share a bed you’re more likely to feel your partner moving about. For me personally, it’s a good option if you want a very firm, traditional mattress you can flip, but if you’re after a bit of contouring comfort or you sleep on your side most of the night, I’d be looking elsewhere.
How we reviewed the Romantica Adagio Extra Firm Mattress
1,080 owner reviews analysed10+ years in the mattress industry4 reliability checksBenchmarked against 71 coil-sprung mattresses30-point spec check683 price checks since Oct 2019
Drawing on over 10 years in the mattress industry, our team assessed the construction, materials and firmness of the Romantica Adagio Extra Firm Mattress from its 30-point specification in Mattress Online's listing, and benchmarked it against 71 other coil-sprung mattresses we track. We analysed all 1,080 owner reviews, checking 1,080 written ones for sagging, heat, firmness and smell complaints. We have checked its price 683 times since October 2019. How we review
Corrections
When we get something wrong, we fix it and say so here. All corrections
- 11 October 2026
- We said this mattress came in all popular UK sizes. It is available from single up to king size.
