Antique Furniture Direct has dated this piece to the 19th Century.
The show side is decorated with carving/moulding to the bed posts, the other side is flat as the bed was made stand against a wall. This bed would make a great large single bed or would look fantastic piled up with comfy cushions and used as a day bed.

This bed will take a deep mattress and is a non-standard size – internally it measures 113cm (3 Feet 8 inches). Which means It would fit a large single (3Ft6) mattress with an inch gap either side for duvet/bed covers. A wide single bed is the same length as a standard UK 3ft single bed, but 17cm wider, giving a slightly roomier sleep. These mattress are available from some larger mattress suppliers as well as some online mattress suppliers.

It comes supplied with a new set of wooden slats (mattress not included).
Construction/Wood:
Pine
Condition Report:
Appears to have been stripped at some point. Wear and marks commensurate with age.
Dimensions:

Non-Standard Size / Slightly Larger Than Large Single Bed (Approx 3ft 8 Wide)
Bed Frame Internal Length: 192cm
Bed Frame External Length: 210cm
Bed Frame Internal Width (where mattress fits) : 113cm
Bed Frame External Width: 123cm
Headboard Height: 113cm
Footboard Height: 113cm
Height to Slats: 30cm
To Fit Mattress Size:
Wide/Large Single Mattress
Approx. 107cm × 190cm
With approx 3 cm gap each side.
Antique Furniture Direct has dated this piece to the 19th Century.
You can view the stock and full dealer information on the Antique Furniture Direct Profile Page