I can't see mould but you can't tell from photos taken at night, they always make a place look dingey. . I wouldn't have thought a landlord would have a mouldy place photographed, he'd deal with the mould first which is not difficult. There should be a floor plan too.
The carpet is no doubt a bit stained but nothing a steam clean wouldn't put right.
Someone said it was a health hazard, how?
Anyway I note it is now up for £1,600 a month which seems reasonable enough to me.