This is just my impression . The house feels like a rental property rather than a home. There are no pictures /art pints/ plants anywhere to make it feel homely. As others have said the lighting need to be looked at. I can see that is has 'nice bones' and it is likely clean but it feels grubby. In short it feels like work and money. Do you have a top floor window that you can take a photo of the rear view from? that would be more impactful than the one that is on the listing. I would have the agent come back and take better photos.
Your neighbours didn't have artwork up in most of the rooms but their room were largely clear so that made sense. Your room have lots of stuff or very visible stuff just no art work.
I spent a bit of time recently helping a friend house hunt 2 and three bedroom terraces where the remit. They were not looking for a fixer upper but didn't mind changing things over times. You get one change to make a first impression and I think that is where perhaps your house is missing out. When you are trawling through a long list of house you often don't spend long on things that dent jump out.
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Photo should have been taken when no vehicle is outside. the angle of that photo does your house no favours.
Steps and wall need pressure washing.
Bins should have been removed for the photo
What is the black thing behind the green bin?
Brighter front door colour much nicer and appealing.
Pic 2 -
Lounge looks messy, cluttered and feels grubby.
The rugs are uninviting and having so many makes it seem like you are hiding damage to the floor. They also contribute to the grubby feeling.
Your footstool looks stained - if it is I would hide it with a decorative tray.
What is going on with the back of the Sofa by the stairs?
The toy box is very distracting as is the stuff poking out under the sofa.
you can see clutter in the kitchen as you look through.
Pic 3
The rack in front of the cupboards screams 'no space' as does the stuff on top of the cupboards and the microwave. I personally would not have oven gloves hanging on the door.
Pic 4
Pointless photo for conveying the view. Washed out and poor composition for impact.
Pic 5
A better photo of the lounge in many respect but what the white thing poking out the cushion. Reinforces the impress that the house is grubby. you need better cushions.
Log burner looks cluttered.
Again too many rugs.
Pic 6
Too much stuff on windowsill
Pic 7
The room looks depressingly dark. Too much stuff visible under the bed. May be a cheap valance sheet to hid the clutter would help. Anyone that hates cats will think you house is likely to smell of cats wee. I definitely would have move that cat tree for the photo.
Pic 8
Too much clutter and the white marks make the floor look filthy. Stuff hanging behind the door. Polarising duvet cover.
Pic 9
Clear but no soul. I might have had plants visible through the window.
Pic 10
There really should be at least a print on the wall.
Pic 11
The basket on the window in off putting and cluttered. The orange towel on the rack above the toiled looks recently used and is distracting. The dark blue towel and mat are jarring. Room does not look inviting.
Pic 12
Decking needs to be pressure washed. Plants growing through from the outside scream that fence is likely to need changing. I would have weeded too. What is the wire / cord that is draped across the garden.