It seems a good deal for a super firm queen mattress. It is even cheaper than double size one at the moment. Lowest ever according to Pricehipster.
IMO, it may be not as good as the popular Zzz's super firm 23cm one, but great for the price you pay (for a backup room).
Features
Giselle Bedding - Rumba Series
Ultra-firm support
Belgium knitted fabric
Independent pocket spring
6 working turns coil system
Extra thick wire diameter
High density foam
Wear-proof linen fabric sides
Side handles for positioning
No-turn technology
Designed to rest on any surface floor, slatted base and base foundation.
Specifications:
Side Material: Polyester
Firmness: 9.0/ Ultra firm
Wire thickness: 2.3mm
Overall dimensions: 203cm x 153cm x 24cm
Size: Queen
Same one for $211.95 @ Kogan if you prefer to buy from.
need single size