I would tidy up the front garden, there seems to be a plant growing onto the roof which would concern me as I wouldn't know what it was. Get new seasonal photos taken of both the front and back garden.
Internally, the lights being obviously on in certain rooms makes me think perhaps the house is a bit dark. I imagine at this time of year the natural light would be better?
The rooms look lovely and big, but sometimes they seem almost too big, as in very little furniture for the space, so perhaps put down some rugs to pull the rooms together a bit.
Something else that jumped out at me is the photo with the tower of weights next to a sofa. Makes me confused about the use of the room. I would remove them, or dress one of your rooms as a gym and move them there.
Basically tidy up the exterior, dress the rooms a bit and get the photos retaken. If that doesn't work, I would look at dropping the price