Haven't read the whole thread, apologies if I duplicate but this what I think you need to do.
Kerb appeal, I think you need a hanging basket and two nice pots outside. Is the front door clean, looks a bit dull, may need reprinting.
Living room, I think the Rayburn needs respraying, certainly the front panel.
I would decorate this room, the candles over the fire have black marks. The books look cluttered and need reducing and organising into colours so they look neat. The rug is dark and I would remove or replace woth cream. Loose the bucket and magazine rack. I'd wall mount the tv and loose the two pieces of furniture to make it look spacious. I'd loose all the stuff hung on the chimney and reduce what is on the mantel. I would loose the mantel and add a mirror if my house. I'd also loose the Welsh dresser and cd racks.
Kitchen I'd paint the walls a soft grey, it looks dark so I would add a silver pic tablecloth to bounce the light. the shelves I'd paint grey and I'd just put white China plates, cups and China up there, all neatly arranged. You need to de clutter all the stuff and have clear surfaces. Remove all the bags etc off door, hide all fridge magnets
Bedroom I'd loose the furniture squashed up in the window.
Bathroom I'd change loo seat for white.
I'd add mirrors to most of the rooms to bounce light, you have a lot of pine furniture which is sucking up your light.
Top floor, I'm a bit confused as the second bedroom is compromised for that but it doesn't look like a usable bedroom, is it not possible to board this, surely it would add massive value as that would be the master with the box room as a dressing room... At the very least the small room needs a bed.
Honestly it looks like it's missing storage space and you need to hide that fact.