It looks like a nice house with a good layout but there's things that draw the eye so you don't see the rooms, you end up concentrating on what are ultimately not big issues but because they take your eye, I missed other positive things.
I'd neutralise quite a lot of it, especially the blue which is very strong. You seem to have a lot of furniture too so if there was a way of thinning that out it may help.
Plain bedding rather than the fussy flowery covers. I'd also consider taking the curtains down as my eye was immediately drawn to them being three quarter length which is a personal thing I don't happen to like, to the point I didn't even notice the dual aspect windows until the 3rd look through and I love dual aspect windows 😄
Maybe some colourful flowers in the kitchen or something to break up the green, wood and cream theme which is quite a lot and block-y too.
The garden is iffy but three houses across the road from me have miniscule gardens and they've all sold quickly, some people don't like the time and trouble a garden takes. You've got a huge advantage in the space to the front which is beautiful.
Are there fountains or something in the pond bit? If there is then get them on, if there's lights in the water, get a nighttime picture taken and soften the area with borrowed garden chairs if you don't have your own, cushions, throws etc, maybe a tray with tea, coffee or drinks on it. Make it look welcoming used and usable. Get a picture with all of your double doors open and lean into the indoor/outdoor space being one huge space in the better weather which immediately makes the garden and usable space bigger. See if you can get some colour into it as well with flowers or pots etc. I think part of the problem is that it's very block-y in colour and dull because of the season. I don't think whoever took the pictures has done you any favours unfortunately.
Maybe some neutral throws to break up the red suite which is strong and block-y. Try and tie in the colours with the softer furnishings outside.
Get rid of the towel or whatever it is over the headboard too. 😄
I've no idea about price. I'm in Scotland where offers over are standard so that doesn't bother me. Good luck with it.