its definitely a ringer.
"Full beige leather interior" - oh, thats why one of the photos shows cloth...
"Electonic dual zone climate" - aaah, that'll be that 'manual heating dial' fully electronic climate then, by the looks of the pics.
The rear seat pics are grey leather, but the front's are too, doesn't match the other pics.
The spare wheel isn't an s4 item either, but he may have sold them as a set of 5.