My two-penneth! have thought about setting up business of staging a home, but we know what thought did!
Pic 1 - Don't know from first picture what property I'm supposed to be looking at. I assume its the bit in the middle, and the entrance is the little porch to the right?
Pic 2 - would suggest I get all three garages.
Pic 3 - Would expect this to be of the entrance hall and floorplan shows stairs which would emphasise that this is a maisonette and not a flat. (Also floor plan shows a big landing upstairs next to bedrooms and this isn't shown either)
Picture of bathroom (presume from upstairs? why is is the first internal photo?) - needs some colour and 'stuff'. Would suggest a shower curtain with some colour in it then pick this up with a couple of towels, soaps, etc. flooring looks a bit outdated - maybe update flooring.
Pic 4 - downstairs loo - taps looks old, flooring etc and is the wall colour peach? If you can't redo then - paint, new taps, new flooring and something on the walls. Don't need to spend $$$.
Pic 5 - kitchen - why was the picture taken from within the kitchen and not at the door - looks tiny. Remove curtains and put up blinds. If you can retile the walls or think about adding some colour. Can't see flooring but new flooring can make a huge difference.
Pic 6 - Wardrobes look out of place and are odd which distracts the eye. Why is there a mirror half way up a wall? Update colours, new bedding, new blinds/curtains.
Pic 7 - ^^ as above - put a bed back between the wardrobes and move the twin beds into the other room. Pick a colour - get new bedding and lamps and curtains.
Pic 8 - Why is all the furniture pushed into one corner? Need to add some colour - new cushions, new curtains, lampshades.
I don't think there is anything seriously wrong, just as you say, needs some dressing. I think you can do it and then get the agents to redo pictures and will sell in no time (hopefully).