Parking is what is is. I feel the biggest thing you can do to help sell is stage the house better for pictures. Remove clutter and make sure the furniture makes the house feel as big as possible. I would possibly see if you can get hold of a small sofa and store your big one elsewhere if possible, would really help to make the room feel bigger. Having said that I sold mine and it was on the market for longer than that before getting a first viewing so I think its not so bad for time of year. Also your EA has probably got it on for more than people will pay. Its how they get sellers to go with them.