It looks unloved. Nice house, though, I think you mainly need to fork out on vegetation!
Congratulations on labelling the photos! Drives me mad when vendors don't.
Lounge/diner is fine. Second picture looks like an oddly empty expanse of carpet. I can see it isn't really (from the first photo) but could you plop a rug down, just for the picture from that end?
The little table in the hallway makes it look cramped.
Cloakroom: Put something on the shelf above the loo - a pile of folded towels or a vase of flowers - and a picture or mirror above. What's opposite the loo? Would a mirror reflect something nice?
Kitchen looks good. I second the new bin & kettle, and would suggest a row of potted herbs on the window sill.
Much bigger mirror on the landing to break up the wall expanse and add depth.
Bedroom 1 needs a single softener: bedside rug, picture/mirror on wall, or vase of flowers.
Bedroom 2 looks good imo: all co-ordinated and easy to imagine lying in bed watching TV.
Bedroom 3: Put a black & white throw over the lodger's pink bedding! Something on the wall would help here, too, or maybe flowers on the window sill.
Bathroom good. Will look even better with shower screen.
Pop 3 or 4 large pots with flowering plants in the back garden. Or maybe 2 flowering and 2 smallish palms, to suggest mediterranean sunshine! Also, putting something on the table might be cheesy, but it works. Wine & 2 glasses, a couple of candles, or a coffee pot & 2 cups.
I'd also suggest a couple of large, potted, flowering plants out front.
While waiting for everyone else to disagree with me - good luck! I'm sure it will sell soon :)